1249361616 has 40 divisors (see below), whose sum is σ = 3268382080. Its totient is φ = 411181056.

The previous prime is 1249361609. The next prime is 1249361621. The reversal of 1249361616 is 6161639421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160945 + ... + 168528.

It is an arithmetic number, because the mean of its divisors is an integer number (81709552).

Almost surely, 2^1249361616 is an apocalyptic number.

1249361616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1249361616 is an abundant number, since it is smaller than the sum of its proper divisors (2019020464).

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

1249361616 is a wasteful number, since it uses less digits than its factorization.

1249361616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329563 (or 329557 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 1249361616 is about 35346.3097932443. The cubic root of 1249361616 is about 1077.0339329044.

The spelling of 1249361616 in words is "one billion, two hundred forty-nine million, three hundred sixty-one thousand, six hundred sixteen".