2101770489 has 64 divisors (see below), whose sum is σ = 3515832320. Its totient is φ = 1087395840.

The previous prime is 2101770479. The next prime is 2101770499. The reversal of 2101770489 is 9840771012.

It is an interprime number because it is at equal distance from previous prime (2101770479) and next prime (2101770499).

It is not a de Polignac number, because 2101770489 - 2¹² = 2101766393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2101770409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3680574 + ... + 3681144.

It is an arithmetic number, because the mean of its divisors is an integer number (54934880).

Almost surely, 2^2101770489 is an apocalyptic number.

It is an amenable number.

2101770489 is a deficient number, since it is larger than the sum of its proper divisors (1414061831).

2101770489 is a wasteful number, since it uses less digits than its factorization.

2101770489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 2101770489 is about 45845.0704983644. The cubic root of 2101770489 is about 1280.9389450602.

The spelling of 2101770489 in words is "two billion, one hundred one million, seven hundred seventy thousand, four hundred eighty-nine".