1078745215 has 4 divisors (see below), whose sum is σ = 1294494264. Its totient is φ = 862996168.

The previous prime is 1078745209. The next prime is 1078745233. The reversal of 1078745215 is 5125478701.

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-1078745215 is a prime.

It is a super-3 number, since 3×1078745215³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107874517 + ... + 107874526.

It is an arithmetic number, because the mean of its divisors is an integer number (323623566).

Almost surely, 2^1078745215 is an apocalyptic number.

1078745215 is a deficient number, since it is larger than the sum of its proper divisors (215749049).

1078745215 is an equidigital number, since it uses as much as digits as its factorization.

1078745215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215749048.

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 1078745215 is about 32844.2569561255. The cubic root of 1078745215 is about 1025.5880710298.

The spelling of 1078745215 in words is "one billion, seventy-eight million, seven hundred forty-five thousand, two hundred fifteen".