1868147390 has 16 divisors (see below), whose sum is σ = 3453548832. Its totient is φ = 727062624.

The previous prime is 1868147381. The next prime is 1868147429. The reversal of 1868147390 is 937418681.

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, 2524154 + ... + 2524893.

It is an arithmetic number, because the mean of its divisors is an integer number (215846802).

Almost surely, 2^1868147390 is an apocalyptic number.

1868147390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1868147390 is a deficient number, since it is larger than the sum of its proper divisors (1585401442).

1868147390 is a wasteful number, since it uses less digits than its factorization.

1868147390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049091.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 1868147390 is about 43222.0706352669. The cubic root of 1868147390 is about 1231.6019820807.

The spelling of 1868147390 in words is "one billion, eight hundred sixty-eight million, one hundred forty-seven thousand, three hundred ninety".