4001543154 has 48 divisors (see below), whose sum is σ = 10344132000. Its totient is φ = 1143297288.

The previous prime is 4001543131. The next prime is 4001543167. The reversal of 4001543154 is 4513451004.

It is a happy number.

It is a super-2 number, since 2×4001543154² = 32024695226648535432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 753504 + ... + 758795.

It is an arithmetic number, because the mean of its divisors is an integer number (215502750).

Almost surely, 2^4001543154 is an apocalyptic number.

4001543154 is an abundant number, since it is smaller than the sum of its proper divisors (6342588846).

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

4001543154 is a wasteful number, since it uses less digits than its factorization.

4001543154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512324 (or 1512311 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 4001543154 is about 63257.7517305192. The cubic root of 4001543154 is about 1587.6051594133.

Adding to 4001543154 its reverse (4513451004), we get a palindrome (8514994158).

The spelling of 4001543154 in words is "four billion, one million, five hundred forty-three thousand, one hundred fifty-four".