1490231900 has 36 divisors (see below), whose sum is σ = 3424030848. Its totient is φ = 561027840.

The previous prime is 1490231863. The next prime is 1490231923. The reversal of 1490231900 is 91320941.

It is a happy number.

1490231900 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1490231900² = 4441582231555220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436604 + ... + 440003.

It is an arithmetic number, because the mean of its divisors is an integer number (95111968).

Almost surely, 2^1490231900 is an apocalyptic number.

1490231900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1490231900 is an abundant number, since it is smaller than the sum of its proper divisors (1933798948).

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

1490231900 is a wasteful number, since it uses less digits than its factorization.

1490231900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876638 (or 876631 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1490231900 is about 38603.5218600583. The cubic root of 1490231900 is about 1142.2240106994.

The spelling of 1490231900 in words is "one billion, four hundred ninety million, two hundred thirty-one thousand, nine hundred".