1249875090 has 32 divisors (see below), whose sum is σ = 3333000960. Its totient is φ = 333299952.

The previous prime is 1249875079. The next prime is 1249875091. The reversal of 1249875090 is 905789421.

1249875090 is a `hidden beast` number, since 1 + 2 + 498 + 75 + 0 + 90 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1249875091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2314314 + ... + 2314853.

It is an arithmetic number, because the mean of its divisors is an integer number (104156280).

Almost surely, 2^1249875090 is an apocalyptic number.

1249875090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1249875090 is an abundant number, since it is smaller than the sum of its proper divisors (2083125870).

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

1249875090 is a wasteful number, since it uses less digits than its factorization.

1249875090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629183 (or 4629177 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1249875090 is about 35353.5725210339. The cubic root of 1249875090 is about 1077.1814624291.

The spelling of 1249875090 in words is "one billion, two hundred forty-nine million, eight hundred seventy-five thousand, ninety".