1253641810 has 32 divisors (see below), whose sum is σ = 2311068672. Its totient is φ = 489403200.

The previous prime is 1253641801. The next prime is 1253641811. The reversal of 1253641810 is 181463521.

It is a super-2 number, since 2×1253641810² = 3143235575560152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1253641811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171735 + ... + 178885.

It is an arithmetic number, because the mean of its divisors is an integer number (72220896).

Almost surely, 2^1253641810 is an apocalyptic number.

1253641810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253641810 is a deficient number, since it is larger than the sum of its proper divisors (1057426862).

1253641810 is a wasteful number, since it uses less digits than its factorization.

1253641810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7578.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1253641810 is about 35406.8045720028. The cubic root of 1253641810 is about 1078.2624696065.

The spelling of 1253641810 in words is "one billion, two hundred fifty-three million, six hundred forty-one thousand, eight hundred ten".