1912349917 has 8 divisors (see below), whose sum is σ = 1982666240. Its totient is φ = 1842572880.

The previous prime is 1912349911. The next prime is 1912349951. The reversal of 1912349917 is 7199432191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1912349917 - 2¹¹ = 1912347869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912349911) 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, 127593 + ... + 141790.

It is an arithmetic number, because the mean of its divisors is an integer number (247833280).

Almost surely, 2^1912349917 is an apocalyptic number.

It is an amenable number.

1912349917 is a deficient number, since it is larger than the sum of its proper divisors (70316323).

1912349917 is a wasteful number, since it uses less digits than its factorization.

1912349917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269643.

The product of its digits is 122472, while the sum is 46.

The square root of 1912349917 is about 43730.4232428638. The cubic root of 1912349917 is about 1241.2400699306.

The spelling of 1912349917 in words is "one billion, nine hundred twelve million, three hundred forty-nine thousand, nine hundred seventeen".