1631899374 has 16 divisors (see below), whose sum is σ = 3730055808. Its totient is φ = 466256952.

The previous prime is 1631899363. The next prime is 1631899387. The reversal of 1631899374 is 4739981361.

1631899374 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 19427332 + ... + 19427415.

It is an arithmetic number, because the mean of its divisors is an integer number (233128488).

Almost surely, 2^1631899374 is an apocalyptic number.

1631899374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1631899374 is an abundant number, since it is smaller than the sum of its proper divisors (2098156434).

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

1631899374 is a wasteful number, since it uses less digits than its factorization.

1631899374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38854759.

The product of its digits is 979776, while the sum is 51.

The square root of 1631899374 is about 40396.7743019167. The cubic root of 1631899374 is about 1177.3288650996.

The spelling of 1631899374 in words is "one billion, six hundred thirty-one million, eight hundred ninety-nine thousand, three hundred seventy-four".