1868449245 has 16 divisors (see below), whose sum is σ = 3219482112. Its totient is φ = 919851840.

The previous prime is 1868449217. The next prime is 1868449279. The reversal of 1868449245 is 5429448681.

It is not a de Polignac number, because 1868449245 - 2¹¹ = 1868447197 is a prime.

It is a super-2 number, since 2×1868449245² = 6982205162282140050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4790701 + ... + 4791090.

It is an arithmetic number, because the mean of its divisors is an integer number (201217632).

Almost surely, 2^1868449245 is an apocalyptic number.

1868449245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1868449245 is a deficient number, since it is larger than the sum of its proper divisors (1351032867).

1868449245 is a wasteful number, since it uses less digits than its factorization.

1868449245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9581812.

The product of its digits is 2211840, while the sum is 51.

The square root of 1868449245 is about 43225.5624023563. The cubic root of 1868449245 is about 1231.6683125350.

The spelling of 1868449245 in words is "one billion, eight hundred sixty-eight million, four hundred forty-nine thousand, two hundred forty-five".