1920652369 has 4 divisors (see below), whose sum is σ = 1935775744. Its totient is φ = 1905528996.

The previous prime is 1920652343. The next prime is 1920652417. The reversal of 1920652369 is 9632560291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1920652369 is a prime.

It is a super-2 number, since 2×1920652369² = 7377811045090624322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1920653369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7561497 + ... + 7561750.

It is an arithmetic number, because the mean of its divisors is an integer number (483943936).

Almost surely, 2^1920652369 is an apocalyptic number.

It is an amenable number.

1920652369 is a deficient number, since it is larger than the sum of its proper divisors (15123375).

1920652369 is a wasteful number, since it uses less digits than its factorization.

1920652369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15123374.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 1920652369 is about 43825.2480768792. The cubic root of 1920652369 is about 1243.0337546471.

The spelling of 1920652369 in words is "one billion, nine hundred twenty million, six hundred fifty-two thousand, three hundred sixty-nine".