3781020889 has 8 divisors (see below), whose sum is σ = 3844615040. Its totient is φ = 3717478800.

The previous prime is 3781020883. The next prime is 3781020913. The reversal of 3781020889 is 9880201873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3781020889 is a prime.

It is a super-2 number, since 2×3781020889² = 28592237926108700642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3781020883) 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, 150544 + ... + 173854.

It is an arithmetic number, because the mean of its divisors is an integer number (480576880).

Almost surely, 2^3781020889 is an apocalyptic number.

It is an amenable number.

3781020889 is a deficient number, since it is larger than the sum of its proper divisors (63594151).

3781020889 is a wasteful number, since it uses less digits than its factorization.

3781020889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26031.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 3781020889 is about 61490.0064156770. The cubic root of 3781020889 is about 1557.8884549723. Note that the first 3 decimals are identical.

The spelling of 3781020889 in words is "three billion, seven hundred eighty-one million, twenty thousand, eight hundred eighty-nine".