3919485644 has 6 divisors (see below), whose sum is σ = 6859099884. Its totient is φ = 1959742820.

The previous prime is 3919485641. The next prime is 3919485653. The reversal of 3919485644 is 4465849193.

It is not an unprimeable number, because it can be changed into a prime (3919485641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489935702 + ... + 489935709.

It is an arithmetic number, because the mean of its divisors is an integer number (1143183314).

Almost surely, 2^3919485644 is an apocalyptic number.

It is an amenable number.

3919485644 is a deficient number, since it is larger than the sum of its proper divisors (2939614240).

3919485644 is a wasteful number, since it uses less digits than its factorization.

3919485644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979871415 (or 979871413 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 53.

The square root of 3919485644 is about 62605.7956103107. The cubic root of 3919485644 is about 1576.6780662290.

The spelling of 3919485644 in words is "three billion, nine hundred nineteen million, four hundred eighty-five thousand, six hundred forty-four".