1626145140 has 24 divisors (see below), whose sum is σ = 4553206560. Its totient is φ = 433638688.

The previous prime is 1626145127. The next prime is 1626145177. The reversal of 1626145140 is 415416261.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1626145098 and 1626145107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13551150 + ... + 13551269.

It is an arithmetic number, because the mean of its divisors is an integer number (189716940).

Almost surely, 2^1626145140 is an apocalyptic number.

1626145140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1626145140 is an abundant number, since it is smaller than the sum of its proper divisors (2927061420).

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

1626145140 is a wasteful number, since it uses less digits than its factorization.

1626145140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27102431 (or 27102429 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1626145140 is about 40325.4899536261. The cubic root of 1626145140 is about 1175.9434438765.

The spelling of 1626145140 in words is "one billion, six hundred twenty-six million, one hundred forty-five thousand, one hundred forty".