5207691946 has 4 divisors (see below), whose sum is σ = 7811537922. Its totient is φ = 2603845972.

The previous prime is 5207691943. The next prime is 5207691949. The reversal of 5207691946 is 6491967025.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (5207691943) and next prime (5207691949).

It can be written as a sum of positive squares in only one way, i.e., 5206344025 + 1347921 = 72155^2 + 1161^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 5207691946.

It is not an unprimeable number, because it can be changed into a prime (5207691941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1301922985 + ... + 1301922988.

Almost surely, 2^5207691946 is an apocalyptic number.

5207691946 is a deficient number, since it is larger than the sum of its proper divisors (2603845976).

5207691946 is a wasteful number, since it uses less digits than its factorization.

5207691946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603845975.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 5207691946 is about 72164.3398500949. The cubic root of 5207691946 is about 1733.3320288534.

The spelling of 5207691946 in words is "five billion, two hundred seven million, six hundred ninety-one thousand, nine hundred forty-six".