4891945102 has 32 divisors (see below), whose sum is σ = 8176613760. Its totient is φ = 2176368480.

The previous prime is 4891945087. The next prime is 4891945147. The reversal of 4891945102 is 2015491984.

It is a super-2 number, since 2×4891945102² = 47862253761963580808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220849 + ... + 241987.

It is an arithmetic number, because the mean of its divisors is an integer number (255519180).

Almost surely, 2^4891945102 is an apocalyptic number.

4891945102 is a deficient number, since it is larger than the sum of its proper divisors (3284668658).

4891945102 is a wasteful number, since it uses less digits than its factorization.

4891945102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21376.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 4891945102 is about 69942.4413500129. The cubic root of 4891945102 is about 1697.5680453201.

The spelling of 4891945102 in words is "four billion, eight hundred ninety-one million, nine hundred forty-five thousand, one hundred two".