1641878072 has 16 divisors (see below), whose sum is σ = 3144022560. Its totient is φ = 803472064.

The previous prime is 1641878057. The next prime is 1641878083. The reversal of 1641878072 is 2708781461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2182973 + ... + 2183724.

It is an arithmetic number, because the mean of its divisors is an integer number (196501410).

Almost surely, 2^1641878072 is an apocalyptic number.

It is an amenable number.

1641878072 is a deficient number, since it is larger than the sum of its proper divisors (1502144488).

1641878072 is a wasteful number, since it uses less digits than its factorization.

1641878072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366750 (or 4366746 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

The square root of 1641878072 is about 40520.0946691885. The cubic root of 1641878072 is about 1179.7236909302.

The spelling of 1641878072 in words is "one billion, six hundred forty-one million, eight hundred seventy-eight thousand, seventy-two".