1641797072 has 40 divisors (see below), whose sum is σ = 3217032192. Its totient is φ = 811641600.

The previous prime is 1641797023. The next prime is 1641797077. The reversal of 1641797072 is 2707971461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641797077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671372 + ... + 673812.

Almost surely, 2^1641797072 is an apocalyptic number.

It is an amenable number.

1641797072 is a deficient number, since it is larger than the sum of its proper divisors (1575235120).

1641797072 is a wasteful number, since it uses less digits than its factorization.

1641797072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907 (or 2901 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 1641797072 is about 40519.0951527795. The cubic root of 1641797072 is about 1179.7042905472.

The spelling of 1641797072 in words is "one billion, six hundred forty-one million, seven hundred ninety-seven thousand, seventy-two".