1990376970 has 16 divisors (see below), whose sum is σ = 4776904800. Its totient is φ = 530767184.

The previous prime is 1990376959. The next prime is 1990376987. The reversal of 1990376970 is 796730991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33172920 + ... + 33172979.

It is an arithmetic number, because the mean of its divisors is an integer number (298556550).

Almost surely, 2^1990376970 is an apocalyptic number.

1990376970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1990376970 is an abundant number, since it is smaller than the sum of its proper divisors (2786527830).

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

1990376970 is a wasteful number, since it uses less digits than its factorization.

1990376970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66345909.

The product of its (nonzero) digits is 642978, while the sum is 51.

The square root of 1990376970 is about 44613.6410753482. The cubic root of 1990376970 is about 1257.8970906354.

The spelling of 1990376970 in words is "one billion, nine hundred ninety million, three hundred seventy-six thousand, nine hundred seventy".