1253988770 has 32 divisors (see below), whose sum is σ = 2275836480. Its totient is φ = 497465280.

The previous prime is 1253988763. The next prime is 1253988787. The reversal of 1253988770 is 778893521.

It is a super-2 number, since 2×1253988770² = 3144975670572225800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070285 + ... + 1071455.

It is an arithmetic number, because the mean of its divisors is an integer number (71119890).

Almost surely, 2^1253988770 is an apocalyptic number.

1253988770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253988770 is a deficient number, since it is larger than the sum of its proper divisors (1021847710).

1253988770 is a wasteful number, since it uses less digits than its factorization.

1253988770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 1253988770 is about 35411.7038562112. The cubic root of 1253988770 is about 1078.3619343381.

The spelling of 1253988770 in words is "one billion, two hundred fifty-three million, nine hundred eighty-eight thousand, seven hundred seventy".