1155971672 has 8 divisors (see below), whose sum is σ = 2167446900. Its totient is φ = 577985832.

The previous prime is 1155971669. The next prime is 1155971737. The reversal of 1155971672 is 2761795511.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72248222 + ... + 72248237.

Almost surely, 2^1155971672 is an apocalyptic number.

It is an amenable number.

1155971672 is a deficient number, since it is larger than the sum of its proper divisors (1011475228).

1155971672 is a wasteful number, since it uses less digits than its factorization.

1155971672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144496465 (or 144496461 counting only the distinct ones).

The product of its digits is 132300, while the sum is 44.

The square root of 1155971672 is about 33999.5834092125. The cubic root of 1155971672 is about 1049.4998894261.

The spelling of 1155971672 in words is "one billion, one hundred fifty-five million, nine hundred seventy-one thousand, six hundred seventy-two".