163402645 has 16 divisors (see below), whose sum is σ = 225865728. Its totient is φ = 111162240.

The previous prime is 163402639. The next prime is 163402651. The reversal of 163402645 is 546204361.

It is an interprime number because it is at equal distance from previous prime (163402639) and next prime (163402651).

It is not a de Polignac number, because 163402645 - 2⁷ = 163402517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13936 + ... + 22825.

It is an arithmetic number, because the mean of its divisors is an integer number (14116608).

Almost surely, 2^163402645 is an apocalyptic number.

It is an amenable number.

163402645 is a deficient number, since it is larger than the sum of its proper divisors (62463083).

163402645 is a wasteful number, since it uses less digits than its factorization.

163402645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36900.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 163402645 is about 12782.9044039295. The cubic root of 163402645 is about 546.7049767834.

The spelling of 163402645 in words is "one hundred sixty-three million, four hundred two thousand, six hundred forty-five".