1990366692 has 12 divisors (see below), whose sum is σ = 4644188976. Its totient is φ = 663455560.

The previous prime is 1990366691. The next prime is 1990366699. The reversal of 1990366692 is 2966630991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1990366691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82931934 + ... + 82931957.

It is an arithmetic number, because the mean of its divisors is an integer number (387015748).

Almost surely, 2^1990366692 is an apocalyptic number.

1990366692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1990366692 is an abundant number, since it is smaller than the sum of its proper divisors (2653822284).

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

1990366692 is a wasteful number, since it uses less digits than its factorization.

1990366692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165863898 (or 165863896 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 51.

The square root of 1990366692 is about 44613.5258862153. The cubic root of 1990366692 is about 1257.8949254361.

The spelling of 1990366692 in words is "one billion, nine hundred ninety million, three hundred sixty-six thousand, six hundred ninety-two".