1145698901 has 8 divisors (see below), whose sum is σ = 1220108184. Its totient is φ = 1072069120.

The previous prime is 1145698847. The next prime is 1145698907. The reversal of 1145698901 is 1098965411.

It can be written as a sum of positive squares in 4 ways, for example, as 856732900 + 288966001 = 29270^2 + 16999^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145698901 - 2³⁰ = 71957077 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 (1145698907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191840 + ... + 197721.

It is an arithmetic number, because the mean of its divisors is an integer number (152513523).

Almost surely, 2^1145698901 is an apocalyptic number.

It is an amenable number.

1145698901 is a deficient number, since it is larger than the sum of its proper divisors (74409283).

1145698901 is a wasteful number, since it uses less digits than its factorization.

1145698901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389751.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 1145698901 is about 33848.1742639097. The cubic root of 1145698901 is about 1046.3817717018.

The spelling of 1145698901 in words is "one billion, one hundred forty-five million, six hundred ninety-eight thousand, nine hundred one".