11801973 has 16 divisors (see below), whose sum is σ = 16228800. Its totient is φ = 7624320.

The previous prime is 11801971. The next prime is 11801981. The reversal of 11801973 is 37910811.

11801973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11801973 - 2¹ = 11801971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11801973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11801971) 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, 27958 + ... + 28376.

It is an arithmetic number, because the mean of its divisors is an integer number (1014300).

Almost surely, 2^11801973 is an apocalyptic number.

It is an amenable number.

11801973 is a deficient number, since it is larger than the sum of its proper divisors (4426827).

11801973 is a wasteful number, since it uses less digits than its factorization.

11801973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 11801973 is about 3435.3999767130. The cubic root of 11801973 is about 227.6764995095.

The spelling of 11801973 in words is "eleven million, eight hundred one thousand, nine hundred seventy-three".