1868449123 has 8 divisors (see below), whose sum is σ = 1882998000. Its totient is φ = 1853927328.

The previous prime is 1868449109. The next prime is 1868449127. The reversal of 1868449123 is 3219448681.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1868449123 is a prime.

It is a super-2 number, since 2×1868449123² = 6982204250478938258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1868449127) 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, 144748 + ... + 157126.

It is an arithmetic number, because the mean of its divisors is an integer number (235374750).

Almost surely, 2^1868449123 is an apocalyptic number.

1868449123 is a deficient number, since it is larger than the sum of its proper divisors (14548877).

1868449123 is a wasteful number, since it uses less digits than its factorization.

1868449123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541.

The product of its digits is 331776, while the sum is 46.

The square root of 1868449123 is about 43225.5609911543. The cubic root of 1868449123 is about 1231.6682857278.

The spelling of 1868449123 in words is "one billion, eight hundred sixty-eight million, four hundred forty-nine thousand, one hundred twenty-three".