1249473880 has 32 divisors (see below), whose sum is σ = 2813986800. Its totient is φ = 499314816.

The previous prime is 1249473859. The next prime is 1249473923. The reversal of 1249473880 is 883749421.

It is a super-2 number, since 2×1249473880² = 3122369953604508800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1249473880.

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, 29431 + ... + 58009.

Almost surely, 2^1249473880 is an apocalyptic number.

1249473880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249473880 is an abundant number, since it is smaller than the sum of its proper divisors (1564512920).

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

1249473880 is a wasteful number, since it uses less digits than its factorization.

1249473880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29683 (or 29679 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 1249473880 is about 35347.8978158532. The cubic root of 1249473880 is about 1077.0661916501.

The spelling of 1249473880 in words is "one billion, two hundred forty-nine million, four hundred seventy-three thousand, eight hundred eighty".