1531964 has 12 divisors (see below), whose sum is σ = 3063984. Its totient is φ = 656544.

The previous prime is 1531909. The next prime is 1531987. The reversal of 1531964 is 4691351.

1531964 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27329 + ... + 27384.

It is an arithmetic number, because the mean of its divisors is an integer number (255332).

2^1531964 is an apocalyptic number.

1531964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1531964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1531964 is a wasteful number, since it uses less digits than its factorization.

1531964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54724 (or 54722 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 1531964 is about 1237.7253330202. The cubic root of 1531964 is about 115.2788193559.

The spelling of 1531964 in words is "one million, five hundred thirty-one thousand, nine hundred sixty-four".