1340185992 has 32 divisors (see below), whose sum is σ = 3400476000. Its totient is φ = 440060544.

The previous prime is 1340185967. The next prime is 1340185993. The reversal of 1340185992 is 2995810431.

1340185992 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 (1340185993) 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, 415117 + ... + 418332.

It is an arithmetic number, because the mean of its divisors is an integer number (106264875).

Almost surely, 2^1340185992 is an apocalyptic number.

1340185992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1340185992 is an abundant number, since it is smaller than the sum of its proper divisors (2060290008).

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

1340185992 is a wasteful number, since it uses less digits than its factorization.

1340185992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833525 (or 833521 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1340185992 is about 36608.5508044227. The cubic root of 1340185992 is about 1102.5247768764.

The spelling of 1340185992 in words is "one billion, three hundred forty million, one hundred eighty-five thousand, nine hundred ninety-two".