2101746972 has 24 divisors (see below), whose sum is σ = 5281313296. Its totient is φ = 646691328.

The previous prime is 2101746971. The next prime is 2101746989. The reversal of 2101746972 is 2796471012.

It is a super-2 number, since 2×2101746972² = 8834680668622337568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 2101746972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101746971) 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, 6736213 + ... + 6736524.

Almost surely, 2^2101746972 is an apocalyptic number.

It is an amenable number.

2101746972 is an abundant number, since it is smaller than the sum of its proper divisors (3179566324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101746972 is a wasteful number, since it uses less digits than its factorization.

2101746972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13472757 (or 13472755 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 2101746972 is about 45844.8140142372. The cubic root of 2101746972 is about 1280.9341675082.

The spelling of 2101746972 in words is "two billion, one hundred one million, seven hundred forty-six thousand, nine hundred seventy-two".