1290553788 has 12 divisors (see below), whose sum is σ = 3011292200. Its totient is φ = 430184592.

The previous prime is 1290553783. The next prime is 1290553813. The reversal of 1290553788 is 8873550921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1290553788² = 3331058159442297888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290553783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53773063 + ... + 53773086.

Almost surely, 2^1290553788 is an apocalyptic number.

It is an amenable number.

1290553788 is an abundant number, since it is smaller than the sum of its proper divisors (1720738412).

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

1290553788 is a wasteful number, since it uses less digits than its factorization.

1290553788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107546156 (or 107546154 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 1290553788 is about 35924.2785313776. The cubic root of 1290553788 is about 1088.7429854688.

The spelling of 1290553788 in words is "one billion, two hundred ninety million, five hundred fifty-three thousand, seven hundred eighty-eight".