2151402344 has 32 divisors (see below), whose sum is σ = 4964776320. Its totient is φ = 851103936.

The previous prime is 2151402329. The next prime is 2151402347. The reversal of 2151402344 is 4432041512.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (2151402347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476884 + ... + 1478339.

It is an arithmetic number, because the mean of its divisors is an integer number (155149260).

Almost surely, 2^2151402344 is an apocalyptic number.

It is an amenable number.

2151402344 is an abundant number, since it is smaller than the sum of its proper divisors (2813373976).

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

2151402344 is a wasteful number, since it uses less digits than its factorization.

2151402344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955249 (or 2955245 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2151402344 is about 46383.2118767125. The cubic root of 2151402344 is about 1290.9434326079.

Adding to 2151402344 its reverse (4432041512), we get a palindrome (6583443856).

The spelling of 2151402344 in words is "two billion, one hundred fifty-one million, four hundred two thousand, three hundred forty-four".