1249633994 has 32 divisors (see below), whose sum is σ = 2341426176. Its totient is φ = 487791360.

The previous prime is 1249633981. The next prime is 1249633997. The reversal of 1249633994 is 4993369421.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1249633997) 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, 77309 + ... + 92064.

It is an arithmetic number, because the mean of its divisors is an integer number (73169568).

Almost surely, 2^1249633994 is an apocalyptic number.

1249633994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1249633994 is a deficient number, since it is larger than the sum of its proper divisors (1091792182).

1249633994 is a wasteful number, since it uses less digits than its factorization.

1249633994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169430.

The product of its digits is 1259712, while the sum is 50.

The square root of 1249633994 is about 35350.1625738836. The cubic root of 1249633994 is about 1077.1121966162.

The spelling of 1249633994 in words is "one billion, two hundred forty-nine million, six hundred thirty-three thousand, nine hundred ninety-four".