1868261370 has 32 divisors (see below), whose sum is σ = 4486086720. Its totient is φ = 497952000.

The previous prime is 1868261357. The next prime is 1868261371. The reversal of 1868261370 is 731628681.

It is not an unprimeable number, because it can be changed into a prime (1868261371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49245 + ... + 78495.

It is an arithmetic number, because the mean of its divisors is an integer number (140190210).

Almost surely, 2^1868261370 is an apocalyptic number.

1868261370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1868261370 is an abundant number, since it is smaller than the sum of its proper divisors (2617825350).

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

1868261370 is a wasteful number, since it uses less digits than its factorization.

1868261370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31390.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 1868261370 is about 43223.3891544844. The cubic root of 1868261370 is about 1231.6270292014.

The spelling of 1868261370 in words is "one billion, eight hundred sixty-eight million, two hundred sixty-one thousand, three hundred seventy".