16161437349 has 12 divisors (see below), whose sum is σ = 23479238796. Its totient is φ = 10712011392.

The previous prime is 16161437339. The next prime is 16161437351. The reversal of 16161437349 is 94373416161.

16161437349 is a `hidden beast` number, since 16 + 161 + 437 + 3 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7509089025 + 8652348324 = 86655^2 + 93018^2 .

It is not a de Polignac number, because 16161437349 - 2⁴ = 16161437333 is a prime.

It is a super-2 number, since 2×16161437349² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161437339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5188372 + ... + 5191485.

It is an arithmetic number, because the mean of its divisors is an integer number (1956603233).

Almost surely, 2^16161437349 is an apocalyptic number.

It is an amenable number.

16161437349 is a deficient number, since it is larger than the sum of its proper divisors (7317801447).

16161437349 is a wasteful number, since it uses less digits than its factorization.

16161437349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10380036 (or 10380033 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The spelling of 16161437349 in words is "sixteen billion, one hundred sixty-one million, four hundred thirty-seven thousand, three hundred forty-nine".