3890287540 has 12 divisors (see below), whose sum is σ = 8169603876. Its totient is φ = 1556115008.

The previous prime is 3890287537. The next prime is 3890287547. The reversal of 3890287540 is 457820983.

It can be written as a sum of positive squares in 2 ways, for example, as 831976336 + 3058311204 = 28844^2 + 55302^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3890287547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97257169 + ... + 97257208.

It is an arithmetic number, because the mean of its divisors is an integer number (680800323).

Almost surely, 2^3890287540 is an apocalyptic number.

It is an amenable number.

3890287540 is an abundant number, since it is smaller than the sum of its proper divisors (4279316336).

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

3890287540 is a wasteful number, since it uses less digits than its factorization.

3890287540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194514386 (or 194514384 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 3890287540 is about 62372.1695951007. The cubic root of 3890287540 is about 1572.7531634495.

The spelling of 3890287540 in words is "three billion, eight hundred ninety million, two hundred eighty-seven thousand, five hundred forty".