1539485668 has 24 divisors (see below), whose sum is σ = 3178294784. Its totient is φ = 638496000.

The previous prime is 1539485663. The next prime is 1539485681. The reversal of 1539485668 is 8665849351.

It is a super-2 number, since 2×1539485668² = 4740032243954812448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1539485663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885933 + ... + 887668.

Almost surely, 2^1539485668 is an apocalyptic number.

It is an amenable number.

1539485668 is an abundant number, since it is smaller than the sum of its proper divisors (1638809116).

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

1539485668 is a wasteful number, since it uses less digits than its factorization.

1539485668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773643 (or 1773641 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 55.

The square root of 1539485668 is about 39236.2799969620. The cubic root of 1539485668 is about 1154.6717752030.

The spelling of 1539485668 in words is "one billion, five hundred thirty-nine million, four hundred eighty-five thousand, six hundred sixty-eight".