1990700107 has 6 divisors (see below), whose sum is σ = 2188125044. Its totient is φ = 1809727260.

The previous prime is 1990700069. The next prime is 1990700141. The reversal of 1990700107 is 7010070991.

It is a happy number.

It is not a de Polignac number, because 1990700107 - 2¹⁵ = 1990667339 is a prime.

It is a super-2 number, since 2×1990700107² = 7925773832019622898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1990700197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8225913 + ... + 8226154.

Almost surely, 2^1990700107 is an apocalyptic number.

1990700107 is a deficient number, since it is larger than the sum of its proper divisors (197424937).

1990700107 is a wasteful number, since it uses less digits than its factorization.

1990700107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16452089 (or 16452078 counting only the distinct ones).

The product of its (nonzero) digits is 3969, while the sum is 34.

The square root of 1990700107 is about 44617.2624328297. The cubic root of 1990700107 is about 1257.9651600018.

The spelling of 1990700107 in words is "one billion, nine hundred ninety million, seven hundred thousand, one hundred seven".