3540250643 has 4 divisors (see below), whose sum is σ = 3694174608. Its totient is φ = 3386326680.

The previous prime is 3540250591. The next prime is 3540250667. The reversal of 3540250643 is 3460520453.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3540250643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3540253643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76961948 + ... + 76961993.

It is an arithmetic number, because the mean of its divisors is an integer number (923543652).

Almost surely, 2^3540250643 is an apocalyptic number.

3540250643 is a deficient number, since it is larger than the sum of its proper divisors (153923965).

3540250643 is a wasteful number, since it uses less digits than its factorization.

3540250643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153923964.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 3540250643 is about 59500.0054033611. The cubic root of 3540250643 is about 1524.0925380336.

The spelling of 3540250643 in words is "three billion, five hundred forty million, two hundred fifty thousand, six hundred forty-three".