1990707942 has 16 divisors (see below), whose sum is σ = 3984745392. Its totient is φ = 663014400.

The previous prime is 1990707941. The next prime is 1990707947. The reversal of 1990707942 is 2497070991.

It is a happy number.

It is a super-2 number, since 2×1990707942² = 7925836220683750728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1990707891 and 1990707900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990707941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130923 + ... + 145334.

It is an arithmetic number, because the mean of its divisors is an integer number (249046587).

Almost surely, 2^1990707942 is an apocalyptic number.

1990707942 is an abundant number, since it is smaller than the sum of its proper divisors (1994037450).

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

1990707942 is a wasteful number, since it uses less digits than its factorization.

1990707942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277463.

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 1990707942 is about 44617.3502350823. The cubic root of 1990707942 is about 1257.9668103665.

The spelling of 1990707942 in words is "one billion, nine hundred ninety million, seven hundred seven thousand, nine hundred forty-two".