15690316946 has 4 divisors (see below), whose sum is σ = 23535475422. Its totient is φ = 7845158472.

The previous prime is 15690316879. The next prime is 15690316951. The reversal of 15690316946 is 64961309651.

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

It can be written as a sum of positive squares in only one way, i.e., 9033552025 + 6656764921 = 95045^2 + 81589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15690316894 and 15690316903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3922579235 + ... + 3922579238.

Almost surely, 2^15690316946 is an apocalyptic number.

15690316946 is a deficient number, since it is larger than the sum of its proper divisors (7845158476).

15690316946 is an equidigital number, since it uses as much as digits as its factorization.

15690316946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7845158475.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 15690316946 in words is "fifteen billion, six hundred ninety million, three hundred sixteen thousand, nine hundred forty-six".