64163190 has 128 divisors (see below), whose sum is σ = 199664640. Its totient is φ = 12814848.

The previous prime is 64163173. The next prime is 64163207. The reversal of 64163190 is 9136146.

It is an interprime number because it is at equal distance from previous prime (64163173) and next prime (64163207).

It is a super-2 number, since 2×64163190² = 8233829901952200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51252 + ... + 52488.

It is an arithmetic number, because the mean of its divisors is an integer number (1559880).

Almost surely, 2^64163190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64163190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99832320).

64163190 is an abundant number, since it is smaller than the sum of its proper divisors (135501450).

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

64163190 is a wasteful number, since it uses less digits than its factorization.

64163190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 64163190 is about 8010.1928815728. The cubic root of 64163190 is about 400.3396906107.

The spelling of 64163190 in words is "sixty-four million, one hundred sixty-three thousand, one hundred ninety".