1990072132 has 12 divisors (see below), whose sum is σ = 3488816016. Its totient is φ = 993267560.

The previous prime is 1990072127. The next prime is 1990072151. The reversal of 1990072132 is 2312700991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439594 + ... + 444097.

It is an arithmetic number, because the mean of its divisors is an integer number (290734668).

Almost surely, 2^1990072132 is an apocalyptic number.

It is an amenable number.

1990072132 is a deficient number, since it is larger than the sum of its proper divisors (1498743884).

1990072132 is a wasteful number, since it uses less digits than its factorization.

1990072132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884258 (or 884256 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 1990072132 is about 44610.2245230844. The cubic root of 1990072132 is about 1257.8328692313.

The spelling of 1990072132 in words is "one billion, nine hundred ninety million, seventy-two thousand, one hundred thirty-two".