1253861632 has 36 divisors (see below), whose sum is σ = 2589145020. Its totient is φ = 605308928.

The previous prime is 1253861617. The next prime is 1253861641. The reversal of 1253861632 is 2361683521.

It can be written as a sum of positive squares in 2 ways, for example, as 218566656 + 1035294976 = 14784^2 + 32176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1253861591 and 1253861600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77023 + ... + 91870.

It is an arithmetic number, because the mean of its divisors is an integer number (71920695).

Almost surely, 2^1253861632 is an apocalyptic number.

It is an amenable number.

1253861632 is an abundant number, since it is smaller than the sum of its proper divisors (1335283388).

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

1253861632 is an equidigital number, since it uses as much as digits as its factorization.

1253861632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168938 (or 168924 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 1253861632 is about 35409.9086697495. The cubic root of 1253861632 is about 1078.3254891916.

The spelling of 1253861632 in words is "one billion, two hundred fifty-three million, eight hundred sixty-one thousand, six hundred thirty-two".