163872970 has 16 divisors (see below), whose sum is σ = 299127168. Its totient is φ = 64625680.

The previous prime is 163872949. The next prime is 163872991. The reversal of 163872970 is 79278361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (163872949) and next prime (163872991).

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, 114694 + ... + 116113.

It is an arithmetic number, because the mean of its divisors is an integer number (18695448).

Almost surely, 2^163872970 is an apocalyptic number.

163872970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163872970 is a deficient number, since it is larger than the sum of its proper divisors (135254198).

163872970 is a wasteful number, since it uses less digits than its factorization.

163872970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230885.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 163872970 is about 12801.2878258400. The cubic root of 163872970 is about 547.2290048413.

The spelling of 163872970 in words is "one hundred sixty-three million, eight hundred seventy-two thousand, nine hundred seventy".