1376661157 has 8 divisors (see below), whose sum is σ = 1394515584. Its totient is φ = 1358837088.

The previous prime is 1376661119. The next prime is 1376661193. The reversal of 1376661157 is 7511666731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1376661157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376661557) 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, 92068 + ... + 105970.

It is an arithmetic number, because the mean of its divisors is an integer number (174314448).

Almost surely, 2^1376661157 is an apocalyptic number.

It is an amenable number.

1376661157 is a deficient number, since it is larger than the sum of its proper divisors (17854427).

1376661157 is a wasteful number, since it uses less digits than its factorization.

1376661157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15179.

The product of its digits is 158760, while the sum is 43.

The square root of 1376661157 is about 37103.3847108320. The cubic root of 1376661157 is about 1112.4376687209.

The spelling of 1376661157 in words is "one billion, three hundred seventy-six million, six hundred sixty-one thousand, one hundred fifty-seven".