1249694496 has 36 divisors (see below), whose sum is σ = 3553819542. Its totient is φ = 416564736.

The previous prime is 1249694491. The next prime is 1249694503. The reversal of 1249694496 is 6944969421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 758451600 + 491242896 = 27540^2 + 22164^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1249694491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2169321 + ... + 2169896.

Almost surely, 2^1249694496 is an apocalyptic number.

1249694496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1249694496 is an abundant number, since it is smaller than the sum of its proper divisors (2304125046).

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

1249694496 is a wasteful number, since it uses less digits than its factorization.

1249694496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4339233 (or 4339222 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 1249694496 is about 35351.0183163088. The cubic root of 1249694496 is about 1077.1295794101.

The spelling of 1249694496 in words is "one billion, two hundred forty-nine million, six hundred ninety-four thousand, four hundred ninety-six".