2153746969 has 8 divisors (see below), whose sum is σ = 2373765408. Its totient is φ = 1937765760.

The previous prime is 2153746961. The next prime is 2153746981. The reversal of 2153746969 is 9696473512.

It is a happy number.

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 2153746969 - 2³ = 2153746961 is a prime.

It is a super-2 number, since 2×2153746969² = 9277252012953373922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153746961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008187 + ... + 1010320.

It is an arithmetic number, because the mean of its divisors is an integer number (296720676).

Almost surely, 2^2153746969 is an apocalyptic number.

It is an amenable number.

2153746969 is a deficient number, since it is larger than the sum of its proper divisors (220018439).

2153746969 is a wasteful number, since it uses less digits than its factorization.

2153746969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018615.

The product of its digits is 2449440, while the sum is 52.

The square root of 2153746969 is about 46408.4794945924. The cubic root of 2153746969 is about 1291.4122244139.

The spelling of 2153746969 in words is "two billion, one hundred fifty-three million, seven hundred forty-six thousand, nine hundred sixty-nine".