641919470 has 16 divisors (see below), whose sum is σ = 1174398048. Its totient is φ = 252558240.

The previous prime is 641919451. The next prime is 641919497. The reversal of 641919470 is 74919146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525554 + ... + 526773.

It is an arithmetic number, because the mean of its divisors is an integer number (73399878).

Almost surely, 2^641919470 is an apocalyptic number.

641919470 is a deficient number, since it is larger than the sum of its proper divisors (532478578).

641919470 is a wasteful number, since it uses less digits than its factorization.

641919470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052395.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 641919470 is about 25336.1297360114. The cubic root of 641919470 is about 862.6345521373.

The spelling of 641919470 in words is "six hundred forty-one million, nine hundred nineteen thousand, four hundred seventy".