245140905 has 8 divisors (see below), whose sum is σ = 392225472. Its totient is φ = 130741808.

The previous prime is 245140879. The next prime is 245140913. The reversal of 245140905 is 509041542.

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 245140905 - 2¹¹ = 245138857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8171349 + ... + 8171378.

It is an arithmetic number, because the mean of its divisors is an integer number (49028184).

Almost surely, 2^245140905 is an apocalyptic number.

It is an amenable number.

245140905 is a deficient number, since it is larger than the sum of its proper divisors (147084567).

245140905 is a wasteful number, since it uses less digits than its factorization.

245140905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16342735.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 245140905 is about 15656.9762406411. The cubic root of 245140905 is about 625.8524091759.

The spelling of 245140905 in words is "two hundred forty-five million, one hundred forty thousand, nine hundred five".