1244933690 has 192 divisors, whose sum is σ = 3109518720. Its totient is φ = 352719360.

The previous prime is 1244933687. The next prime is 1244933707. The reversal of 1244933690 is 963394421.

It is a super-2 number, since 2×1244933690² = 3099719784994032200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7637549 + ... + 7637711.

It is an arithmetic number, because the mean of its divisors is an integer number (16195410).

Almost surely, 2^1244933690 is an apocalyptic number.

1244933690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1244933690 is an abundant number, since it is smaller than the sum of its proper divisors (1864585030).

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

1244933690 is a wasteful number, since it uses less digits than its factorization.

1244933690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 1244933690 is about 35283.6178700541. The cubic root of 1244933690 is about 1075.7600365234.

The spelling of 1244933690 in words is "one billion, two hundred forty-four million, nine hundred thirty-three thousand, six hundred ninety".