1990402935 has 16 divisors (see below), whose sum is σ = 3192255360. Its totient is φ = 1059011360.

The previous prime is 1990402903. The next prime is 1990402951. The reversal of 1990402935 is 5392040991.

It is not a de Polignac number, because 1990402935 - 2⁵ = 1990402903 is a prime.

It is a super-2 number, since 2×1990402935² = 7923407687313228450, which contains 22 as substring.

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, 152061 + ... + 164630.

It is an arithmetic number, because the mean of its divisors is an integer number (199515960).

Almost surely, 2^1990402935 is an apocalyptic number.

1990402935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1990402935 is a deficient number, since it is larger than the sum of its proper divisors (1201852425).

1990402935 is a wasteful number, since it uses less digits than its factorization.

1990402935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317118.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 1990402935 is about 44613.9320728402. The cubic root of 1990402935 is about 1257.9025604797.

The spelling of 1990402935 in words is "one billion, nine hundred ninety million, four hundred two thousand, nine hundred thirty-five".