6894611890 has 32 divisors (see below), whose sum is σ = 13341438720. Its totient is φ = 2557102464.

The previous prime is 6894611869. The next prime is 6894611891. The reversal of 6894611890 is 981164986.

It is a super-2 number, since 2×6894611890² = 95071346227458744200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6894611891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377107 + ... + 394966.

It is an arithmetic number, because the mean of its divisors is an integer number (416919960).

Almost surely, 2^6894611890 is an apocalyptic number.

6894611890 is a deficient number, since it is larger than the sum of its proper divisors (6446826830).

6894611890 is a wasteful number, since it uses less digits than its factorization.

6894611890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772146.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 6894611890 is about 83033.7996842250. The cubic root of 6894611890 is about 1903.2825886349.

The spelling of 6894611890 in words is "six billion, eight hundred ninety-four million, six hundred eleven thousand, eight hundred ninety".