537661390 has 16 divisors (see below), whose sum is σ = 1106046432. Its totient is φ = 184341024.

The previous prime is 537661387. The next prime is 537661403. The reversal of 537661390 is 93166735.

537661390 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3840369 + ... + 3840508.

It is an arithmetic number, because the mean of its divisors is an integer number (69127902).

Almost surely, 2^537661390 is an apocalyptic number.

537661390 is an abundant number, since it is smaller than the sum of its proper divisors (568385042).

537661390 is a wasteful number, since it uses less digits than its factorization.

537661390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7680891.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 537661390 is about 23187.5266037583. The cubic root of 537661390 is about 813.1480349546.

It can be divided in two parts, 5376 and 61390, that added together give a palindrome (66766).

The spelling of 537661390 in words is "five hundred thirty-seven million, six hundred sixty-one thousand, three hundred ninety".