1878196045 has 16 divisors (see below), whose sum is σ = 2460948480. Its totient is φ = 1364728000.

The previous prime is 1878196027. The next prime is 1878196051. The reversal of 1878196045 is 5406918781.

It is not a de Polignac number, because 1878196045 - 2⁵ = 1878196013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1878196045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48471 + ... + 78139.

It is an arithmetic number, because the mean of its divisors is an integer number (153809280).

Almost surely, 2^1878196045 is an apocalyptic number.

It is an amenable number.

1878196045 is a deficient number, since it is larger than the sum of its proper divisors (582752435).

1878196045 is a wasteful number, since it uses less digits than its factorization.

1878196045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30836.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 1878196045 is about 43338.1592248679. The cubic root of 1878196045 is about 1233.8062727647.

The spelling of 1878196045 in words is "one billion, eight hundred seventy-eight million, one hundred ninety-six thousand, forty-five".