1290787496 has 32 divisors (see below), whose sum is σ = 2552040000. Its totient is φ = 610361856.

The previous prime is 1290787489. The next prime is 1290787501. The reversal of 1290787496 is 6947870921.

It is a super-2 number, since 2×1290787496² = 3332264719659900032, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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, 83960 + ... + 98136.

It is an arithmetic number, because the mean of its divisors is an integer number (79751250).

Almost surely, 2^1290787496 is an apocalyptic number.

It is an amenable number.

1290787496 is a deficient number, since it is larger than the sum of its proper divisors (1261252504).

1290787496 is a wasteful number, since it uses less digits than its factorization.

1290787496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14801 (or 14797 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 1290787496 is about 35927.5311703991. The cubic root of 1290787496 is about 1088.8087021118.

The spelling of 1290787496 in words is "one billion, two hundred ninety million, seven hundred eighty-seven thousand, four hundred ninety-six".