140369418 has 72 divisors (see below), whose sum is σ = 359725860. Its totient is φ = 39432960.

The previous prime is 140369413. The next prime is 140369431. The reversal of 140369418 is 814963041.

140369418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 127170729 + 13198689 = 11277^2 + 3633^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (140369413) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 52498 + ... + 55106.

Almost surely, 2^140369418 is an apocalyptic number.

140369418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140369418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179862930).

140369418 is an abundant number, since it is smaller than the sum of its proper divisors (219356442).

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

140369418 is a wasteful number, since it uses less digits than its factorization.

140369418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692 (or 2682 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 140369418 is about 11847.7600414593. The cubic root of 140369418 is about 519.7057235350.

The spelling of 140369418 in words is "one hundred forty million, three hundred sixty-nine thousand, four hundred eighteen".