1912290907 has 4 divisors (see below), whose sum is σ = 1913337136. Its totient is φ = 1911244680.

The previous prime is 1912290901. The next prime is 1912290923. The reversal of 1912290907 is 7090922191.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1912290907 - 2²⁷ = 1778073179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1912290907.

It is not an unprimeable number, because it can be changed into a prime (1912290901) 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, 520368 + ... + 524029.

It is an arithmetic number, because the mean of its divisors is an integer number (478334284).

Almost surely, 2^1912290907 is an apocalyptic number.

1912290907 is a deficient number, since it is larger than the sum of its proper divisors (1046229).

1912290907 is a wasteful number, since it uses less digits than its factorization.

1912290907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046228.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 1912290907 is about 43729.7485357508. The cubic root of 1912290907 is about 1241.2273026838.

The spelling of 1912290907 in words is "one billion, nine hundred twelve million, two hundred ninety thousand, nine hundred seven".