1249830670 has 16 divisors (see below), whose sum is σ = 2454213168. Its totient is φ = 454483840.

The previous prime is 1249830629. The next prime is 1249830671. The reversal of 1249830670 is 760389421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249830671) 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, 5680939 + ... + 5681158.

It is an arithmetic number, because the mean of its divisors is an integer number (153388323).

Almost surely, 2^1249830670 is an apocalyptic number.

1249830670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1249830670 is a deficient number, since it is larger than the sum of its proper divisors (1204382498).

1249830670 is a wasteful number, since it uses less digits than its factorization.

1249830670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11362115.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1249830670 is about 35352.9442903982. The cubic root of 1249830670 is about 1077.1687014292.

The spelling of 1249830670 in words is "one billion, two hundred forty-nine million, eight hundred thirty thousand, six hundred seventy".