781337132 has 6 divisors (see below), whose sum is σ = 1367339988. Its totient is φ = 390668564.

The previous prime is 781337129. The next prime is 781337191. The reversal of 781337132 is 231733187.

It is a super-2 number, since 2×781337132² = 1220975427683970848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 781337092 and 781337101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97667138 + ... + 97667145.

It is an arithmetic number, because the mean of its divisors is an integer number (227889998).

Almost surely, 2^781337132 is an apocalyptic number.

It is an amenable number.

781337132 is a deficient number, since it is larger than the sum of its proper divisors (586002856).

781337132 is a wasteful number, since it uses less digits than its factorization.

781337132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195334287 (or 195334285 counting only the distinct ones).

The product of its digits is 21168, while the sum is 35.

The square root of 781337132 is about 27952.4083398909. The cubic root of 781337132 is about 921.0421130707.

The spelling of 781337132 in words is "seven hundred eighty-one million, three hundred thirty-seven thousand, one hundred thirty-two".