1249602644 has 12 divisors (see below), whose sum is σ = 2187981600. Its totient is φ = 624465048.

The previous prime is 1249602617. The next prime is 1249602667. The reversal of 1249602644 is 4462069421.

It is a junction number, because it is equal to n+sod(n) for n = 1249602598 and 1249602607.

It is a congruent number.

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, 75614 + ... + 90645.

It is an arithmetic number, because the mean of its divisors is an integer number (182331800).

Almost surely, 2^1249602644 is an apocalyptic number.

It is an amenable number.

1249602644 is a deficient number, since it is larger than the sum of its proper divisors (938378956).

1249602644 is a wasteful number, since it uses less digits than its factorization.

1249602644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168142 (or 168140 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 1249602644 is about 35349.7191502281. The cubic root of 1249602644 is about 1077.1031892455.

The spelling of 1249602644 in words is "one billion, two hundred forty-nine million, six hundred two thousand, six hundred forty-four".