1149806973 has 16 divisors (see below), whose sum is σ = 1755935360. Its totient is φ = 655589376.

The previous prime is 1149806921. The next prime is 1149806989. The reversal of 1149806973 is 3796089411.

It is a happy number.

It is not a de Polignac number, because 1149806973 - 2⁶ = 1149806909 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 (1149826973) 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, 50308 + ... + 69501.

It is an arithmetic number, because the mean of its divisors is an integer number (109745960).

Almost surely, 2^1149806973 is an apocalyptic number.

It is an amenable number.

1149806973 is a deficient number, since it is larger than the sum of its proper divisors (606128387).

1149806973 is a wasteful number, since it uses less digits than its factorization.

1149806973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120276.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 1149806973 is about 33908.8037683431. The cubic root of 1149806973 is about 1047.6309318130.

The spelling of 1149806973 in words is "one billion, one hundred forty-nine million, eight hundred six thousand, nine hundred seventy-three".