1641099537 has 24 divisors (see below), whose sum is σ = 2955401280. Its totient is φ = 852518880.

The previous prime is 1641099533. The next prime is 1641099547. The reversal of 1641099537 is 7359901461.

1641099537 is a `hidden beast` number, since 1 + 6 + 4 + 109 + 9 + 537 = 666.

It is not a de Polignac number, because 1641099537 - 2² = 1641099533 is a prime.

It is a super-2 number, since 2×1641099537² = 5386415380683228738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1641099492 and 1641099501.

It is not an unprimeable number, because it can be changed into a prime (1641099533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1183362 + ... + 1184747.

It is an arithmetic number, because the mean of its divisors is an integer number (123141720).

Almost surely, 2^1641099537 is an apocalyptic number.

It is an amenable number.

1641099537 is a deficient number, since it is larger than the sum of its proper divisors (1314301743).

1641099537 is a wasteful number, since it uses less digits than its factorization.

1641099537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368133 (or 2368130 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 1641099537 is about 40510.4867534321. The cubic root of 1641099537 is about 1179.5371968970.

The spelling of 1641099537 in words is "one billion, six hundred forty-one million, ninety-nine thousand, five hundred thirty-seven".