1641797087 has 12 divisors (see below), whose sum is σ = 2010364920. Its totient is φ = 1333187856.

The previous prime is 1641797081. The next prime is 1641797089. The reversal of 1641797087 is 7807971461.

It is not a de Polignac number, because 1641797087 - 2⁶ = 1641797023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641797081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 880808 + ... + 882669.

It is an arithmetic number, because the mean of its divisors is an integer number (167530410).

Almost surely, 2^1641797087 is an apocalyptic number.

1641797087 is a deficient number, since it is larger than the sum of its proper divisors (368567833).

1641797087 is a wasteful number, since it uses less digits than its factorization.

1641797087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763510 (or 1763503 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 50.

The square root of 1641797087 is about 40519.0953378774. The cubic root of 1641797087 is about 1179.7042941399.

The spelling of 1641797087 in words is "one billion, six hundred forty-one million, seven hundred ninety-seven thousand, eighty-seven".