1290940488 has 48 divisors (see below), whose sum is σ = 3499442700. Its totient is φ = 429926400.

The previous prime is 1290940477. The next prime is 1290940513. The reversal of 1290940488 is 8840490921.

1290940488 is a `hidden beast` number, since 129 + 0 + 9 + 40 + 488 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1254434724 + 36505764 = 35418^2 + 6042^2 .

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, 79008 + ... + 93936.

Almost surely, 2^1290940488 is an apocalyptic number.

1290940488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1290940488 is an abundant number, since it is smaller than the sum of its proper divisors (2208502212).

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

1290940488 is a wasteful number, since it uses less digits than its factorization.

1290940488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16142 (or 16135 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1290940488 is about 35929.6602822793. The cubic root of 1290940488 is about 1088.8517178266.

The spelling of 1290940488 in words is "one billion, two hundred ninety million, nine hundred forty thousand, four hundred eighty-eight".