1912269939 has 12 divisors (see below), whose sum is σ = 2708498904. Its totient is φ = 1199855104.

The previous prime is 1912269913. The next prime is 1912269941. The reversal of 1912269939 is 9399622191.

It is a happy number.

It is not a de Polignac number, because 1912269939 - 2⁷ = 1912269811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 1912269891 and 1912269900.

It is not an unprimeable number, because it can be changed into a prime (1912265939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1101942 + ... + 1103675.

It is an arithmetic number, because the mean of its divisors is an integer number (225708242).

Almost surely, 2^1912269939 is an apocalyptic number.

1912269939 is a deficient number, since it is larger than the sum of its proper divisors (796228965).

1912269939 is a wasteful number, since it uses less digits than its factorization.

1912269939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205654 (or 2205637 counting only the distinct ones).

The product of its digits is 472392, while the sum is 51.

The square root of 1912269939 is about 43729.5087898321. The cubic root of 1912269939 is about 1241.2227660398. Note that the first 3 decimals are identical.

The spelling of 1912269939 in words is "one billion, nine hundred twelve million, two hundred sixty-nine thousand, nine hundred thirty-nine".