761869138 has 8 divisors (see below), whose sum is σ = 1161538380. Its totient is φ = 374689680.

The previous prime is 761869133. The next prime is 761869169. The reversal of 761869138 is 831968167.

761869138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 467986689 + 293882449 = 21633^2 + 17143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 761869091 and 761869100.

It is not an unprimeable number, because it can be changed into a prime (761869133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3122293 + ... + 3122536.

Almost surely, 2^761869138 is an apocalyptic number.

761869138 is a deficient number, since it is larger than the sum of its proper divisors (399669242).

761869138 is a wasteful number, since it uses less digits than its factorization.

761869138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244892.

The product of its digits is 435456, while the sum is 49.

The square root of 761869138 is about 27601.9770668697. The cubic root of 761869138 is about 913.3280457127.

The spelling of 761869138 in words is "seven hundred sixty-one million, eight hundred sixty-nine thousand, one hundred thirty-eight".