1244792690 has 16 divisors (see below), whose sum is σ = 2250678528. Its totient is φ = 495683376.

The previous prime is 1244792669. The next prime is 1244792699. The reversal of 1244792690 is 962974421.

It is a super-2 number, since 2×1244792690² = 3099017682154872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1244792699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276872 + ... + 281331.

It is an arithmetic number, because the mean of its divisors is an integer number (140667408).

Almost surely, 2^1244792690 is an apocalyptic number.

1244792690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1244792690 is a deficient number, since it is larger than the sum of its proper divisors (1005885838).

1244792690 is a wasteful number, since it uses less digits than its factorization.

1244792690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558433.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 1244792690 is about 35281.6197190548. The cubic root of 1244792690 is about 1075.7194218054.

The spelling of 1244792690 in words is "one billion, two hundred forty-four million, seven hundred ninety-two thousand, six hundred ninety".