1249741696 has 64 divisors (see below), whose sum is σ = 2899190880. Its totient is φ = 525477888.

The previous prime is 1249741681. The next prime is 1249741697. The reversal of 1249741696 is 6961479421.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249741697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34330 + ... + 60646.

Almost surely, 2^1249741696 is an apocalyptic number.

1249741696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249741696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1449595440).

1249741696 is an abundant number, since it is smaller than the sum of its proper divisors (1649449184).

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

1249741696 is an equidigital number, since it uses as much as digits as its factorization.

1249741696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26391 (or 26379 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 1249741696 is about 35351.6859003924. The cubic root of 1249741696 is about 1077.1431400246.

The spelling of 1249741696 in words is "one billion, two hundred forty-nine million, seven hundred forty-one thousand, six hundred ninety-six".