1640315162 has 8 divisors (see below), whose sum is σ = 2462857716. Its totient is φ = 819362592.

The previous prime is 1640315141. The next prime is 1640315177. The reversal of 1640315162 is 2615130461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1224930001 + 415385161 = 34999^2 + 20381^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394913 + ... + 399044.

Almost surely, 2^1640315162 is an apocalyptic number.

1640315162 is a deficient number, since it is larger than the sum of its proper divisors (822542554).

1640315162 is a wasteful number, since it uses less digits than its factorization.

1640315162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794992.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1640315162 is about 40500.8044611462. The cubic root of 1640315162 is about 1179.3492442655.

The spelling of 1640315162 in words is "one billion, six hundred forty million, three hundred fifteen thousand, one hundred sixty-two".