16861964 has 36 divisors (see below), whose sum is σ = 34503504. Its totient is φ = 7063008.

The previous prime is 16861939. The next prime is 16861981. The reversal of 16861964 is 46916861.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97382 + ... + 97554.

Almost surely, 2^16861964 is an apocalyptic number.

16861964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16861964 is an abundant number, since it is smaller than the sum of its proper divisors (17641540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16861964 is a wasteful number, since it uses less digits than its factorization.

16861964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 241 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 16861964 is about 4106.3321833481. The cubic root of 16861964 is about 256.4303268491.

The spelling of 16861964 in words is "sixteen million, eight hundred sixty-one thousand, nine hundred sixty-four".