1955157190 has 32 divisors (see below), whose sum is σ = 4233726720. Its totient is φ = 635058144.

The previous prime is 1955157187. The next prime is 1955157203. The reversal of 1955157190 is 917515591.

It is a super-2 number, since 2×1955157190² = 7645279275217392200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 733692 + ... + 736351.

It is an arithmetic number, because the mean of its divisors is an integer number (132303960).

Almost surely, 2^1955157190 is an apocalyptic number.

1955157190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1955157190 is an abundant number, since it is smaller than the sum of its proper divisors (2278569530).

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

1955157190 is a wasteful number, since it uses less digits than its factorization.

1955157190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470076.

The product of its (nonzero) digits is 70875, while the sum is 43.

The square root of 1955157190 is about 44217.1594519594. The cubic root of 1955157190 is about 1250.4333835922.

The spelling of 1955157190 in words is "one billion, nine hundred fifty-five million, one hundred fifty-seven thousand, one hundred ninety".