1043155645 has 16 divisors (see below), whose sum is σ = 1431399168. Its totient is φ = 714913920.

The previous prime is 1043155637. The next prime is 1043155657. The reversal of 1043155645 is 5465513401.

It is not a de Polignac number, because 1043155645 - 2³ = 1043155637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1043155645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65905 + ... + 80185.

It is an arithmetic number, because the mean of its divisors is an integer number (89462448).

Almost surely, 2^1043155645 is an apocalyptic number.

It is an amenable number.

1043155645 is a deficient number, since it is larger than the sum of its proper divisors (388243523).

1043155645 is a wasteful number, since it uses less digits than its factorization.

1043155645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16380.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1043155645 is about 32297.9201342749. The cubic root of 1043155645 is about 1014.1831035474.

The spelling of 1043155645 in words is "one billion, forty-three million, one hundred fifty-five thousand, six hundred forty-five".