1642590495 has 120 divisors (see below), whose sum is σ = 3689288064. Its totient is φ = 693028224.

The previous prime is 1642590463. The next prime is 1642590577. The reversal of 1642590495 is 5940952461.

1642590495 is a `hidden beast` number, since 16 + 4 + 2 + 590 + 49 + 5 = 666.

It is not a de Polignac number, because 1642590495 - 2⁵ = 1642590463 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1642590495.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 254802 + ... + 261168.

Almost surely, 2^1642590495 is an apocalyptic number.

1642590495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1642590495 is an abundant number, since it is smaller than the sum of its proper divisors (2046697569).

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

1642590495 is a wasteful number, since it uses less digits than its factorization.

1642590495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6411 (or 6395 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 1642590495 is about 40528.8846996805. The cubic root of 1642590495 is about 1179.8942965259.

The spelling of 1642590495 in words is "one billion, six hundred forty-two million, five hundred ninety thousand, four hundred ninety-five".