16819618952 has 32 divisors (see below), whose sum is σ = 32400567000. Its totient is φ = 8179628544.

The previous prime is 16819618931. The next prime is 16819618973. The reversal of 16819618952 is 25981691861.

It is an interprime number because it is at equal distance from previous prime (16819618931) and next prime (16819618973).

It can be written as a sum of positive squares in 4 ways, for example, as 15793954276 + 1025664676 = 125674^2 + 32026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001924 + ... + 1018572.

Almost surely, 2^16819618952 is an apocalyptic number.

It is an amenable number.

16819618952 is a deficient number, since it is larger than the sum of its proper divisors (15580948048).

16819618952 is a wasteful number, since it uses less digits than its factorization.

16819618952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20105 (or 20101 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 56.

The spelling of 16819618952 in words is "sixteen billion, eight hundred nineteen million, six hundred eighteen thousand, nine hundred fifty-two".