537493978 has 16 divisors (see below), whose sum is σ = 924081984. Its totient is φ = 229688640.

The previous prime is 537493961. The next prime is 537493987. The reversal of 537493978 is 879394735.

It is a happy 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, 50463 + ... + 60178.

It is an arithmetic number, because the mean of its divisors is an integer number (57755124).

Almost surely, 2^537493978 is an apocalyptic number.

537493978 is a deficient number, since it is larger than the sum of its proper divisors (386588006).

537493978 is a wasteful number, since it uses less digits than its factorization.

537493978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110997.

The product of its digits is 5715360, while the sum is 55.

The square root of 537493978 is about 23183.9163645834. The cubic root of 537493978 is about 813.0636293709.

It can be divided in two parts, 537 and 493978, that added together give a triangular number (494515 = T₉₉₄).

The spelling of 537493978 in words is "five hundred thirty-seven million, four hundred ninety-three thousand, nine hundred seventy-eight".