140385537 has 12 divisors (see below), whose sum is σ = 211595904. Its totient is φ = 89521080.

The previous prime is 140385533. The next prime is 140385551. The reversal of 140385537 is 735583041.

140385537 is a `hidden beast` number, since 1 + 40 + 3 + 85 + 537 = 666.

It is not a de Polignac number, because 140385537 - 2² = 140385533 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140385533) 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 11 ways as a sum of consecutive naturals, for example, 338889 + ... + 339302.

It is an arithmetic number, because the mean of its divisors is an integer number (17632992).

Almost surely, 2^140385537 is an apocalyptic number.

It is an amenable number.

140385537 is a deficient number, since it is larger than the sum of its proper divisors (71210367).

140385537 is a wasteful number, since it uses less digits than its factorization.

140385537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678220 (or 678217 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 140385537 is about 11848.4402770998. The cubic root of 140385537 is about 519.7256158450.

The spelling of 140385537 in words is "one hundred forty million, three hundred eighty-five thousand, five hundred thirty-seven".