245005019 has 16 divisors (see below), whose sum is σ = 296256000. Its totient is φ = 197930304.

The previous prime is 245005001. The next prime is 245005051. The reversal of 245005019 is 910500542.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245005019 is a prime.

It is a super-2 number, since 2×245005019² = 120054918670380722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245007019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21839 + ... + 31095.

It is an arithmetic number, because the mean of its divisors is an integer number (18516000).

Almost surely, 2^245005019 is an apocalyptic number.

245005019 is a deficient number, since it is larger than the sum of its proper divisors (51250981).

245005019 is a wasteful number, since it uses less digits than its factorization.

245005019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9482.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 245005019 is about 15652.6361677514. The cubic root of 245005019 is about 625.7367473973.

The spelling of 245005019 in words is "two hundred forty-five million, five thousand, nineteen".