1253791290 has 16 divisors (see below), whose sum is σ = 3009099168. Its totient is φ = 334344336.

The previous prime is 1253791289. The next prime is 1253791339. The reversal of 1253791290 is 921973521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20896492 + ... + 20896551.

It is an arithmetic number, because the mean of its divisors is an integer number (188068698).

Almost surely, 2^1253791290 is an apocalyptic number.

1253791290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253791290 is an abundant number, since it is smaller than the sum of its proper divisors (1755307878).

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

1253791290 is a wasteful number, since it uses less digits than its factorization.

1253791290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41793053.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 1253791290 is about 35408.9154027626. The cubic root of 1253791290 is about 1078.3053240239.

The spelling of 1253791290 in words is "one billion, two hundred fifty-three million, seven hundred ninety-one thousand, two hundred ninety".