1868450144 has 48 divisors (see below), whose sum is σ = 4248989136. Its totient is φ = 799334400.

The previous prime is 1868450131. The next prime is 1868450183. The reversal of 1868450144 is 4410548681.

It is a happy number.

It is a super-2 number, since 2×1868450144² = 6982211881227241472, 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 7 ways as a sum of consecutive naturals, for example, 150137 + ... + 162104.

It is an arithmetic number, because the mean of its divisors is an integer number (88520607).

Almost surely, 2^1868450144 is an apocalyptic number.

It is an amenable number.

1868450144 is an abundant number, since it is smaller than the sum of its proper divisors (2380538992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868450144 is a wasteful number, since it uses less digits than its factorization.

1868450144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312279 (or 312271 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 1868450144 is about 43225.5728012944. The cubic root of 1868450144 is about 1231.6685100731.

The spelling of 1868450144 in words is "one billion, eight hundred sixty-eight million, four hundred fifty thousand, one hundred forty-four".