3854497972 has 24 divisors (see below), whose sum is σ = 7280469000. Its totient is φ = 1775026176.

The previous prime is 3854497949. The next prime is 3854497973. The reversal of 3854497972 is 2797944583.

It can be written as a sum of positive squares in 4 ways, for example, as 15952036 + 3838545936 = 3994^2 + 61956^2 .

It is a super-2 number, since 2×3854497972² = 29714309232304225568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3854497973) 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, 59197 + ... + 105892.

It is an arithmetic number, because the mean of its divisors is an integer number (303352875).

Almost surely, 2^3854497972 is an apocalyptic number.

It is an amenable number.

3854497972 is a deficient number, since it is larger than the sum of its proper divisors (3425971028).

3854497972 is a wasteful number, since it uses less digits than its factorization.

3854497972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165555 (or 165553 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 58.

The square root of 3854497972 is about 62084.6033409250. The cubic root of 3854497972 is about 1567.9153328962.

The spelling of 3854497972 in words is "three billion, eight hundred fifty-four million, four hundred ninety-seven thousand, nine hundred seventy-two".