161101437 has 32 divisors (see below), whose sum is σ = 261995520. Its totient is φ = 86002560.

The previous prime is 161101411. The next prime is 161101471. The reversal of 161101437 is 734101161.

It is not a de Polignac number, because 161101437 - 2¹⁸ = 160839293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161101487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26362 + ... + 31892.

It is an arithmetic number, because the mean of its divisors is an integer number (8187360).

Almost surely, 2^161101437 is an apocalyptic number.

It is an amenable number.

161101437 is a deficient number, since it is larger than the sum of its proper divisors (100894083).

161101437 is a wasteful number, since it uses less digits than its factorization.

161101437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5633.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 161101437 is about 12692.5740888127. The cubic root of 161101437 is about 544.1264089982.

Adding to 161101437 its reverse (734101161), we get a palindrome (895202598).

The spelling of 161101437 in words is "one hundred sixty-one million, one hundred one thousand, four hundred thirty-seven".