1249983151 has 4 divisors (see below), whose sum is σ = 1250411400. Its totient is φ = 1249554904.

The previous prime is 1249983127. The next prime is 1249983169. The reversal of 1249983151 is 1513899421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1513899421 = 967 ⋅1565563.

It is a cyclic number.

It is not a de Polignac number, because 1249983151 - 2⁹ = 1249982639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1249983098 and 1249983107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249983121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209716 + ... + 215593.

It is an arithmetic number, because the mean of its divisors is an integer number (312602850).

Almost surely, 2^1249983151 is an apocalyptic number.

1249983151 is a deficient number, since it is larger than the sum of its proper divisors (428249).

1249983151 is an equidigital number, since it uses as much as digits as its factorization.

1249983151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428248.

The product of its digits is 77760, while the sum is 43.

The square root of 1249983151 is about 35355.1007776813. The cubic root of 1249983151 is about 1077.2125049848.

The spelling of 1249983151 in words is "one billion, two hundred forty-nine million, nine hundred eighty-three thousand, one hundred fifty-one".