1912906489 has 8 divisors (see below), whose sum is σ = 2062145792. Its totient is φ = 1763966160.

The previous prime is 1912906483. The next prime is 1912906493. The reversal of 1912906489 is 9846092191.

It is a happy number.

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 1912906489 - 2⁷ = 1912906361 is a prime.

It is a super-2 number, since 2×1912906489² = 7318422471316614242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1912906483) 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, 61359 + ... + 87124.

It is an arithmetic number, because the mean of its divisors is an integer number (257768224).

Almost surely, 2^1912906489 is an apocalyptic number.

It is an amenable number.

1912906489 is a deficient number, since it is larger than the sum of its proper divisors (149239303).

1912906489 is a wasteful number, since it uses less digits than its factorization.

1912906489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149487.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 1912906489 is about 43736.7864503098. The cubic root of 1912906489 is about 1241.3604754505.

The spelling of 1912906489 in words is "one billion, nine hundred twelve million, nine hundred six thousand, four hundred eighty-nine".