1990349319 has 32 divisors (see below), whose sum is σ = 3085295616. Its totient is φ = 1117801440.

The previous prime is 1990349311. The next prime is 1990349353. The reversal of 1990349319 is 9139430991.

It is not a de Polignac number, because 1990349319 - 2³ = 1990349311 is a prime.

It is a super-2 number, since 2×1990349319² = 7922980823287527522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990349311) 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, 515454 + ... + 519300.

It is an arithmetic number, because the mean of its divisors is an integer number (96415488).

Almost surely, 2^1990349319 is an apocalyptic number.

1990349319 is a deficient number, since it is larger than the sum of its proper divisors (1094946297).

1990349319 is a wasteful number, since it uses less digits than its factorization.

1990349319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275.

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 1990349319 is about 44613.3311802649. The cubic root of 1990349319 is about 1257.8912655624.

The spelling of 1990349319 in words is "one billion, nine hundred ninety million, three hundred forty-nine thousand, three hundred nineteen".