1868699970 has 320 divisors, whose sum is σ = 5645376000. Its totient is φ = 441552384.

The previous prime is 1868699969. The next prime is 1868699983. The reversal of 1868699970 is 799968681.

It is a junction number, because it is equal to n+sod(n) for n = 1868699898 and 1868699907.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 23654391 + ... + 23654469.

It is an arithmetic number, because the mean of its divisors is an integer number (17641800).

Almost surely, 2^1868699970 is an apocalyptic number.

1868699970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868699970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2822688000).

1868699970 is an abundant number, since it is smaller than the sum of its proper divisors (3776676030).

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

1868699970 is a wasteful number, since it uses less digits than its factorization.

1868699970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The square root of 1868699970 is about 43228.4624986825. The cubic root of 1868699970 is about 1231.7234021102.

The spelling of 1868699970 in words is "one billion, eight hundred sixty-eight million, six hundred ninety-nine thousand, nine hundred seventy".