1253188940 has 12 divisors (see below), whose sum is σ = 2631696816. Its totient is φ = 501275568.

The previous prime is 1253188939. The next prime is 1253188957. The reversal of 1253188940 is 498813521.

It is a super-3 number, since 3×1253188940³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 31329704 + ... + 31329743.

It is an arithmetic number, because the mean of its divisors is an integer number (219308068).

Almost surely, 2^1253188940 is an apocalyptic number.

1253188940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253188940 is an abundant number, since it is smaller than the sum of its proper divisors (1378507876).

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

1253188940 is a wasteful number, since it uses less digits than its factorization.

1253188940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62659456 (or 62659454 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 1253188940 is about 35400.4087547023. The cubic root of 1253188940 is about 1078.1326155200.

The spelling of 1253188940 in words is "one billion, two hundred fifty-three million, one hundred eighty-eight thousand, nine hundred forty".