1813958160 has 160 divisors (see below), whose sum is σ = 6487299072. Its totient is φ = 410703360.

The previous prime is 1813958147. The next prime is 1813958161. The reversal of 1813958160 is 618593181.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1813958161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174715 + ... + 184805.

Almost surely, 2^1813958160 is an apocalyptic number.

1813958160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813958160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3243649536).

1813958160 is an abundant number, since it is smaller than the sum of its proper divisors (4673340912).

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

1813958160 is a wasteful number, since it uses less digits than its factorization.

1813958160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221 (or 10215 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 1813958160 is about 42590.5876925877. The cubic root of 1813958160 is about 1219.5766156062.

The spelling of 1813958160 in words is "one billion, eight hundred thirteen million, nine hundred fifty-eight thousand, one hundred sixty".