1397677158 has 24 divisors (see below), whose sum is σ = 3030245400. Its totient is φ = 465593184.

The previous prime is 1397677147. The next prime is 1397677181. The reversal of 1397677158 is 8517767931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4833 + ... + 53091.

It is an arithmetic number, because the mean of its divisors is an integer number (126260225).

Almost surely, 2^1397677158 is an apocalyptic number.

1397677158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1397677158 is an abundant number, since it is smaller than the sum of its proper divisors (1632568242).

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

1397677158 is a wasteful number, since it uses less digits than its factorization.

1397677158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49876 (or 49873 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 1397677158 is about 37385.5206998645. The cubic root of 1397677158 is about 1118.0699001464.

The spelling of 1397677158 in words is "one billion, three hundred ninety-seven million, six hundred seventy-seven thousand, one hundred fifty-eight".