1661833101 has 8 divisors (see below), whose sum is σ = 2246130880. Its totient is φ = 1092712032.

The previous prime is 1661833057. The next prime is 1661833109. The reversal of 1661833101 is 1013381661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1661833101 - 2⁶ = 1661833037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661833109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3793921 + ... + 3794358.

It is an arithmetic number, because the mean of its divisors is an integer number (280766360).

Almost surely, 2^1661833101 is an apocalyptic number.

It is an amenable number.

1661833101 is a deficient number, since it is larger than the sum of its proper divisors (584297779).

1661833101 is an equidigital number, since it uses as much as digits as its factorization.

1661833101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588355.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1661833101 is about 40765.5872151990. The cubic root of 1661833101 is about 1184.4838265380.

The spelling of 1661833101 in words is "one billion, six hundred sixty-one million, eight hundred thirty-three thousand, one hundred one".