1626164340 has 48 divisors (see below), whose sum is σ = 4574875200. Its totient is φ = 431585280.

The previous prime is 1626164317. The next prime is 1626164341. The reversal of 1626164340 is 434616261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1626164341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51565 + ... + 76884.

It is an arithmetic number, because the mean of its divisors is an integer number (95309900).

Almost surely, 2^1626164340 is an apocalyptic number.

1626164340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1626164340 is an abundant number, since it is smaller than the sum of its proper divisors (2948710860).

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

1626164340 is a wasteful number, since it uses less digits than its factorization.

1626164340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128672 (or 128670 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1626164340 is about 40325.7280157470. The cubic root of 1626164340 is about 1175.9480720048.

It can be divided in two parts, 16261 and 64340, that added together give a triangular number (80601 = T₄₀₁).

The spelling of 1626164340 in words is "one billion, six hundred twenty-six million, one hundred sixty-four thousand, three hundred forty".