1690227912 has 32 divisors (see below), whose sum is σ = 4315478400. Its totient is φ = 551421504.

The previous prime is 1690227899. The next prime is 1690227919. The reversal of 1690227912 is 2197220961.

1690227912 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1690227919) 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, 748087 + ... + 750342.

It is an arithmetic number, because the mean of its divisors is an integer number (134858700).

Almost surely, 2^1690227912 is an apocalyptic number.

1690227912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1690227912 is an abundant number, since it is smaller than the sum of its proper divisors (2625250488).

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

1690227912 is a wasteful number, since it uses less digits than its factorization.

1690227912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498485 (or 1498481 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 1690227912 is about 41112.3814926842. The cubic root of 1690227912 is about 1191.1919681033.

The spelling of 1690227912 in words is "one billion, six hundred ninety million, two hundred twenty-seven thousand, nine hundred twelve".