161037901 has 16 divisors (see below), whose sum is σ = 175690240. Its totient is φ = 147044160.

The previous prime is 161037871. The next prime is 161037911. The reversal of 161037901 is 109730161.

It is not a de Polignac number, because 161037901 - 2¹⁵ = 161005133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161037901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161037911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219331 + ... + 220063.

It is an arithmetic number, because the mean of its divisors is an integer number (10980640).

Almost surely, 2^161037901 is an apocalyptic number.

It is an amenable number.

161037901 is a deficient number, since it is larger than the sum of its proper divisors (14652339).

161037901 is a wasteful number, since it uses less digits than its factorization.

161037901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 161037901 is about 12690.0709611885. The cubic root of 161037901 is about 544.0548678168.

The spelling of 161037901 in words is "one hundred sixty-one million, thirty-seven thousand, nine hundred one".