2151017489 has 8 divisors (see below), whose sum is σ = 2199788232. Its totient is φ = 2102768640.

The previous prime is 2151017483. The next prime is 2151017507. The reversal of 2151017489 is 9847101512.

It can be written as a sum of positive squares in 4 ways, for example, as 117007489 + 2034010000 = 10817^2 + 45100^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2151017489 - 2⁸ = 2151017233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151017483) 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, 122132 + ... + 138629.

It is an arithmetic number, because the mean of its divisors is an integer number (274973529).

Almost surely, 2^2151017489 is an apocalyptic number.

It is an amenable number.

2151017489 is a deficient number, since it is larger than the sum of its proper divisors (48770743).

2151017489 is a wasteful number, since it uses less digits than its factorization.

2151017489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260947.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 2151017489 is about 46379.0630457322. The cubic root of 2151017489 is about 1290.8664509337.

The spelling of 2151017489 in words is "two billion, one hundred fifty-one million, seventeen thousand, four hundred eighty-nine".