245738891 has 8 divisors (see below), whose sum is σ = 254284800. Its totient is φ = 237231720.

The previous prime is 245738887. The next prime is 245738903. The reversal of 245738891 is 198837542.

It is a happy number.

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 245738891 - 2² = 245738887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245738291) 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, 3530 + ... + 22448.

It is an arithmetic number, because the mean of its divisors is an integer number (31785600).

Almost surely, 2^245738891 is an apocalyptic number.

245738891 is a deficient number, since it is larger than the sum of its proper divisors (8545909).

245738891 is a wasteful number, since it uses less digits than its factorization.

245738891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19369.

The product of its digits is 483840, while the sum is 47.

The square root of 245738891 is about 15676.0610805138. The cubic root of 245738891 is about 626.3608882756.

The spelling of 245738891 in words is "two hundred forty-five million, seven hundred thirty-eight thousand, eight hundred ninety-one".