163620492 has 48 divisors (see below), whose sum is σ = 437176320. Its totient is φ = 46657152.

The previous prime is 163620491. The next prime is 163620493. The reversal of 163620492 is 294026361.

It is an interprime number because it is at equal distance from previous prime (163620491) and next prime (163620493).

It is not an unprimeable number, because it can be changed into a prime (163620491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49384 + ... + 52592.

It is an arithmetic number, because the mean of its divisors is an integer number (9107840).

Almost surely, 2^163620492 is an apocalyptic number.

163620492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163620492 is an abundant number, since it is smaller than the sum of its proper divisors (273555828).

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

163620492 is a wasteful number, since it uses less digits than its factorization.

163620492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830 (or 3828 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 163620492 is about 12791.4225948485. The cubic root of 163620492 is about 546.9478230185.

The spelling of 163620492 in words is "one hundred sixty-three million, six hundred twenty thousand, four hundred ninety-two".