1372122648 has 48 divisors (see below), whose sum is σ = 4002027120. Its totient is φ = 422191296.

The previous prime is 1372122643. The next prime is 1372122659. The reversal of 1372122648 is 8462212731.

It is a happy number.

1372122648 is a `hidden beast` number, since 1 + 3 + 7 + 2 + 1 + 2 + 2 + 648 = 666.

It is a super-2 number, since 2×1372122648² = 3765441122309063808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372122643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 732036 + ... + 733907.

It is an arithmetic number, because the mean of its divisors is an integer number (83375565).

Almost surely, 2^1372122648 is an apocalyptic number.

1372122648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1372122648 is an abundant number, since it is smaller than the sum of its proper divisors (2629904472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1372122648 is a wasteful number, since it uses less digits than its factorization.

1372122648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465968 (or 1465961 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1372122648 is about 37042.1739102877. The cubic root of 1372122648 is about 1111.2138462014.

The spelling of 1372122648 in words is "one billion, three hundred seventy-two million, one hundred twenty-two thousand, six hundred forty-eight".