1631116377 has 36 divisors (see below), whose sum is σ = 2634272784. Its totient is φ = 964005840.

The previous prime is 1631116363. The next prime is 1631116379. The reversal of 1631116377 is 7736111361.

It is a happy number.

1631116377 is a `hidden beast` number, since 1 + 6 + 3 + 1 + 11 + 637 + 7 = 666.

It is not a de Polignac number, because 1631116377 - 2¹⁵ = 1631083609 is a prime.

It is a super-2 number, since 2×1631116377² = 5321081270635212258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1631116379) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2634774 + ... + 2635392.

It is an arithmetic number, because the mean of its divisors is an integer number (73174244).

Almost surely, 2^1631116377 is an apocalyptic number.

It is an amenable number.

1631116377 is a deficient number, since it is larger than the sum of its proper divisors (1003156407).

1631116377 is an equidigital number, since it uses as much as digits as its factorization.

1631116377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 676 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 1631116377 is about 40387.0818084199. The cubic root of 1631116377 is about 1177.1405380375.

The spelling of 1631116377 in words is "one billion, six hundred thirty-one million, one hundred sixteen thousand, three hundred seventy-seven".