1377306157 has 4 divisors (see below), whose sum is σ = 1384517376. Its totient is φ = 1370094940.

The previous prime is 1377306149. The next prime is 1377306169. The reversal of 1377306157 is 7516037731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7516037731 = 257 ⋅29245283.

It is a cyclic number.

It is not a de Polignac number, because 1377306157 - 2³ = 1377306149 is a prime.

It is a super-2 number, since 2×1377306157² = 3793944500220217298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377306757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3605323 + ... + 3605704.

It is an arithmetic number, because the mean of its divisors is an integer number (346129344).

Almost surely, 2^1377306157 is an apocalyptic number.

It is an amenable number.

1377306157 is a deficient number, since it is larger than the sum of its proper divisors (7211219).

1377306157 is an equidigital number, since it uses as much as digits as its factorization.

1377306157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7211218.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 1377306157 is about 37112.0756223631. The cubic root of 1377306157 is about 1112.6113765024.

The spelling of 1377306157 in words is "one billion, three hundred seventy-seven million, three hundred six thousand, one hundred fifty-seven".