1541023989 has 16 divisors (see below), whose sum is σ = 2201983872. Its totient is φ = 956121408.

The previous prime is 1541023949. The next prime is 1541023993. The reversal of 1541023989 is 9893201451.

It is a de Polignac number, because none of the positive numbers 2^k-1541023989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1541023989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1541023949) 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, 299254 + ... + 304359.

It is an arithmetic number, because the mean of its divisors is an integer number (137623992).

Almost surely, 2^1541023989 is an apocalyptic number.

It is an amenable number.

1541023989 is a deficient number, since it is larger than the sum of its proper divisors (660959883).

1541023989 is a wasteful number, since it uses less digits than its factorization.

1541023989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603676.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1541023989 is about 39255.8784005657. The cubic root of 1541023989 is about 1155.0562465815.

The spelling of 1541023989 in words is "one billion, five hundred forty-one million, twenty-three thousand, nine hundred eighty-nine".