1972170369 has 64 divisors (see below), whose sum is σ = 3267174400. Its totient is φ = 1167566400.

The previous prime is 1972170367. The next prime is 1972170371. The reversal of 1972170369 is 9630712791.

1972170369 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1972170367) and next prime (1972170371).

It is not a de Polignac number, because 1972170369 - 2¹ = 1972170367 is a prime.

It is a super-3 number, since 3×1972170369³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972170367) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2295462 + ... + 2296320.

It is an arithmetic number, because the mean of its divisors is an integer number (51049600).

Almost surely, 2^1972170369 is an apocalyptic number.

It is an amenable number.

1972170369 is a deficient number, since it is larger than the sum of its proper divisors (1295004031).

1972170369 is a wasteful number, since it uses less digits than its factorization.

1972170369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 1972170369 is about 44409.1248393841. The cubic root of 1972170369 is about 1254.0498766820.

The spelling of 1972170369 in words is "one billion, nine hundred seventy-two million, one hundred seventy thousand, three hundred sixty-nine".