1869908412 has 12 divisors (see below), whose sum is σ = 4363119656. Its totient is φ = 623302800.

The previous prime is 1869908399. The next prime is 1869908419. The reversal of 1869908412 is 2148099681.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1869908412³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1869908419) 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, 77912839 + ... + 77912862.

Almost surely, 2^1869908412 is an apocalyptic number.

1869908412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1869908412 is an abundant number, since it is smaller than the sum of its proper divisors (2493211244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1869908412 is a wasteful number, since it uses less digits than its factorization.

1869908412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155825708 (or 155825706 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 1869908412 is about 43242.4376278674. The cubic root of 1869908412 is about 1231.9888532401.

The spelling of 1869908412 in words is "one billion, eight hundred sixty-nine million, nine hundred eight thousand, four hundred twelve".