1913299442 has 16 divisors (see below), whose sum is σ = 3044767320. Its totient is φ = 898599168.

The previous prime is 1913299441. The next prime is 1913299463. The reversal of 1913299442 is 2449923191.

It can be written as a sum of positive squares in 4 ways, for example, as 1686827041 + 226472401 = 41071^2 + 15049^2 .

It is a super-2 number, since 2×1913299442² = 7321429509515022728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1913299393 and 1913299402.

It is not an unprimeable number, because it can be changed into a prime (1913299441) 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, 37973 + ... + 72584.

Almost surely, 2^1913299442 is an apocalyptic number.

1913299442 is a deficient number, since it is larger than the sum of its proper divisors (1131467878).

1913299442 is a wasteful number, since it uses less digits than its factorization.

1913299442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111085.

The product of its digits is 139968, while the sum is 44.

The square root of 1913299442 is about 43741.2784678272. The cubic root of 1913299442 is about 1241.4454705314.

The spelling of 1913299442 in words is "one billion, nine hundred thirteen million, two hundred ninety-nine thousand, four hundred forty-two".