1373277243 has 16 divisors (see below), whose sum is σ = 1999662336. Its totient is φ = 833189280.

The previous prime is 1373277233. The next prime is 1373277271. The reversal of 1373277243 is 3427723731.

1373277243 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1373277243 - 2⁵ = 1373277211 is a prime.

It is a super-2 number, since 2×1373277243² = 3771780772283362098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1373277233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245205 + ... + 250742.

It is an arithmetic number, because the mean of its divisors is an integer number (124978896).

Almost surely, 2^1373277243 is an apocalyptic number.

1373277243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1373277243 is a deficient number, since it is larger than the sum of its proper divisors (626385093).

1373277243 is a wasteful number, since it uses less digits than its factorization.

1373277243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496034.

The product of its digits is 148176, while the sum is 39.

The square root of 1373277243 is about 37057.7555040777. The cubic root of 1373277243 is about 1111.5254418286.

The spelling of 1373277243 in words is "one billion, three hundred seventy-three million, two hundred seventy-seven thousand, two hundred forty-three".