15401683349 has 6 divisors (see below), whose sum is σ = 16677562626. Its totient is φ = 14216938320.

The previous prime is 15401683289. The next prime is 15401683417. The reversal of 15401683349 is 94338610451.

It can be written as a sum of positive squares in 3 ways, for example, as 39816100 + 15361867249 = 6310^2 + 123943^2 .

It is not a de Polignac number, because 15401683349 - 2⁸ = 15401683093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15401685349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45566942 + ... + 45567279.

It is an arithmetic number, because the mean of its divisors is an integer number (2779593771).

Almost surely, 2^15401683349 is an apocalyptic number.

It is an amenable number.

15401683349 is a deficient number, since it is larger than the sum of its proper divisors (1275879277).

15401683349 is an equidigital number, since it uses as much as digits as its factorization.

15401683349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91134247 (or 91134234 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 15401683349 in words is "fifteen billion, four hundred one million, six hundred eighty-three thousand, three hundred forty-nine".