163961250 has 80 divisors (see below), whose sum is σ = 427813056. Its totient is φ = 41800000.

The previous prime is 163961249. The next prime is 163961257. The reversal of 163961250 is 52169361.

It is a happy number.

163961250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (163961257) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 85300 + ... + 87200.

Almost surely, 2^163961250 is an apocalyptic number.

163961250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163961250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213906528).

163961250 is an abundant number, since it is smaller than the sum of its proper divisors (263851806).

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

163961250 is a wasteful number, since it uses less digits than its factorization.

163961250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 163961250 is about 12804.7354521677. The cubic root of 163961250 is about 547.3272531048.

The spelling of 163961250 in words is "one hundred sixty-three million, nine hundred sixty-one thousand, two hundred fifty".