1913161090 has 8 divisors (see below), whose sum is σ = 3443689980. Its totient is φ = 765264432.

The previous prime is 1913161069. The next prime is 1913161097. The reversal of 1913161090 is 901613191.

It can be written as a sum of positive squares in 2 ways, for example, as 1887120481 + 26040609 = 43441^2 + 5103^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1913161097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95658045 + ... + 95658064.

Almost surely, 2^1913161090 is an apocalyptic number.

1913161090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1913161090 is a deficient number, since it is larger than the sum of its proper divisors (1530528890).

1913161090 is a wasteful number, since it uses less digits than its factorization.

1913161090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191316116.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 1913161090 is about 43739.6969582552. The cubic root of 1913161090 is about 1241.4155465512.

The spelling of 1913161090 in words is "one billion, nine hundred thirteen million, one hundred sixty-one thousand, ninety".