1319413979 has 32 divisors (see below), whose sum is σ = 1592640000. Its totient is φ = 1079806464.

The previous prime is 1319413973. The next prime is 1319413981. The reversal of 1319413979 is 9793149131.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319413979 is a prime.

It is a super-2 number, since 2×1319413979² = 3481706495961224882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1319413973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834812 + ... + 836390.

It is an arithmetic number, because the mean of its divisors is an integer number (49770000).

Almost surely, 2^1319413979 is an apocalyptic number.

1319413979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1319413979 is a deficient number, since it is larger than the sum of its proper divisors (273226021).

1319413979 is a wasteful number, since it uses less digits than its factorization.

1319413979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827.

The product of its digits is 183708, while the sum is 47.

The square root of 1319413979 is about 36323.7385052805. The cubic root of 1319413979 is about 1096.7989525273.

The spelling of 1319413979 in words is "one billion, three hundred nineteen million, four hundred thirteen thousand, nine hundred seventy-nine".