1868420097 has 12 divisors (see below), whose sum is σ = 2699208720. Its totient is φ = 1245438168.

The previous prime is 1868420041. The next prime is 1868420101. The reversal of 1868420097 is 7900248681.

It is not a de Polignac number, because 1868420097 - 2²⁶ = 1801311233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1868420297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101554 + ... + 118532.

It is an arithmetic number, because the mean of its divisors is an integer number (224934060).

Almost surely, 2^1868420097 is an apocalyptic number.

It is an amenable number.

1868420097 is a deficient number, since it is larger than the sum of its proper divisors (830788623).

1868420097 is a wasteful number, since it uses less digits than its factorization.

1868420097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29212 (or 29209 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1868420097 is about 43225.2252394363. The cubic root of 1868420097 is about 1231.6619077843.

It can be divided in two parts, 18684 and 20097, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 1868420097 in words is "one billion, eight hundred sixty-eight million, four hundred twenty thousand, ninety-seven".