1642090548 has 96 divisors (see below), whose sum is σ = 4622688000. Its totient is φ = 452957568.

The previous prime is 1642090547. The next prime is 1642090591. The reversal of 1642090548 is 8450902461.

It is a super-2 number, since 2×1642090548² = 5392922735661880608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642090547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112486 + ... + 126242.

It is an arithmetic number, because the mean of its divisors is an integer number (48153000).

Almost surely, 2^1642090548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642090548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2311344000).

1642090548 is an abundant number, since it is smaller than the sum of its proper divisors (2980597452).

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

1642090548 is a wasteful number, since it uses less digits than its factorization.

1642090548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13814 (or 13798 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1642090548 is about 40522.7164439898. The cubic root of 1642090548 is about 1179.7745782166.

The spelling of 1642090548 in words is "one billion, six hundred forty-two million, ninety thousand, five hundred forty-eight".