1089701972 has 24 divisors (see below), whose sum is σ = 2024142120. Its totient is φ = 511534080.

The previous prime is 1089701959. The next prime is 1089702007. The reversal of 1089701972 is 2791079801.

It can be written as a sum of positive squares in 4 ways, for example, as 775845316 + 313856656 = 27854^2 + 17716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8222 + ... + 47402.

It is an arithmetic number, because the mean of its divisors is an integer number (84339255).

Almost surely, 2^1089701972 is an apocalyptic number.

It is an amenable number.

1089701972 is a deficient number, since it is larger than the sum of its proper divisors (934440148).

1089701972 is a wasteful number, since it uses less digits than its factorization.

1089701972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39611 (or 39609 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 44.

The square root of 1089701972 is about 33010.6342259582. The cubic root of 1089701972 is about 1029.0486619143.

The spelling of 1089701972 in words is "one billion, eighty-nine million, seven hundred one thousand, nine hundred seventy-two".