1652881590 has 48 divisors (see below), whose sum is σ = 4300289136. Its totient is φ = 440481600.

The previous prime is 1652881577. The next prime is 1652881597. The reversal of 1652881590 is 951882561.

It is a happy number.

1652881590 is a `hidden beast` number, since 1 + 6 + 52 + 8 + 8 + 1 + 590 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1652881597) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157920 + ... + 168060.

It is an arithmetic number, because the mean of its divisors is an integer number (89589357).

Almost surely, 2^1652881590 is an apocalyptic number.

1652881590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1652881590 is an abundant number, since it is smaller than the sum of its proper divisors (2647407546).

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

1652881590 is a wasteful number, since it uses less digits than its factorization.

1652881590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11965 (or 11962 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The square root of 1652881590 is about 40655.6464713083. The cubic root of 1652881590 is about 1182.3532445891.

It can be divided in two parts, 1652881 and 590, that added together give a triangular number (1653471 = T₁₈₁₈).

The spelling of 1652881590 in words is "one billion, six hundred fifty-two million, eight hundred eighty-one thousand, five hundred ninety".