1639115161 has 8 divisors (see below), whose sum is σ = 1725802880. Its totient is φ = 1552469328.

The previous prime is 1639115141. The next prime is 1639115189. The reversal of 1639115161 is 1615119361.

It is a happy number.

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

It is not a de Polignac number, because 1639115161 - 2⁹ = 1639114649 is a prime.

It is a super-2 number, since 2×1639115161² = 5373397022040111842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1639115141) 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, 99655 + ... + 114931.

It is an arithmetic number, because the mean of its divisors is an integer number (215725360).

Almost surely, 2^1639115161 is an apocalyptic number.

It is an amenable number.

1639115161 is a deficient number, since it is larger than the sum of its proper divisors (86687719).

1639115161 is a wasteful number, since it uses less digits than its factorization.

1639115161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20943.

The product of its digits is 4860, while the sum is 34.

The square root of 1639115161 is about 40485.9872178017. The cubic root of 1639115161 is about 1179.0615829763.

The spelling of 1639115161 in words is "one billion, six hundred thirty-nine million, one hundred fifteen thousand, one hundred sixty-one".