1620132656 has 10 divisors (see below), whose sum is σ = 3139007052. Its totient is φ = 810066320.

The previous prime is 1620132649. The next prime is 1620132667. The reversal of 1620132656 is 6562310261.

It is a super-2 number, since 2×1620132656² = 5249659646075228672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50629130 + ... + 50629161.

Almost surely, 2^1620132656 is an apocalyptic number.

1620132656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1620132656 is a deficient number, since it is larger than the sum of its proper divisors (1518874396).

1620132656 is a wasteful number, since it uses less digits than its factorization.

1620132656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101258299 (or 101258293 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1620132656 is about 40250.8714936708. The cubic root of 1620132656 is about 1174.4923489252.

The spelling of 1620132656 in words is "one billion, six hundred twenty million, one hundred thirty-two thousand, six hundred fifty-six".