4000351540 has 24 divisors (see below), whose sum is σ = 8405016480. Its totient is φ = 1599325728.

The previous prime is 4000351493. The next prime is 4000351627. The reversal of 4000351540 is 451530004.

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, 9870 + ... + 89989.

It is an arithmetic number, because the mean of its divisors is an integer number (350209020).

Almost surely, 2^4000351540 is an apocalyptic number.

It is an amenable number.

4000351540 is an abundant number, since it is smaller than the sum of its proper divisors (4404664940).

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

4000351540 is a wasteful number, since it uses less digits than its factorization.

4000351540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101871 (or 101869 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 4000351540 is about 63248.3323100301. The cubic root of 4000351540 is about 1587.4475535198.

Adding to 4000351540 its reverse (451530004), we get a palindrome (4451881544).

The spelling of 4000351540 in words is "four billion, three hundred fifty-one thousand, five hundred forty".