1490438900 has 36 divisors (see below), whose sum is σ = 3244524108. Its totient is φ = 594282240.

The previous prime is 1490438897. The next prime is 1490438903. The reversal of 1490438900 is 98340941.

It is an interprime number because it is at equal distance from previous prime (1490438897) and next prime (1490438903).

It can be written as a sum of positive squares in 6 ways, for example, as 18028516 + 1472410384 = 4246^2 + 38372^2 .

It is a super-2 number, since 2×1490438900² = 4442816229266420000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490438903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8192 + ... + 55208.

Almost surely, 2^1490438900 is an apocalyptic number.

1490438900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1490438900 is an abundant number, since it is smaller than the sum of its proper divisors (1754085208).

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

1490438900 is a wasteful number, since it uses less digits than its factorization.

1490438900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47348 (or 47341 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1490438900 is about 38606.2028694872. The cubic root of 1490438900 is about 1142.2768949571.

The spelling of 1490438900 in words is "one billion, four hundred ninety million, four hundred thirty-eight thousand, nine hundred".