78051893 has 8 divisors (see below), whose sum is σ = 80683776. Its totient is φ = 75427200.

The previous prime is 78051889. The next prime is 78051901. The reversal of 78051893 is 39815087.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78051893 - 2² = 78051889 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 78051893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78051863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28805 + ... + 31397.

It is an arithmetic number, because the mean of its divisors is an integer number (10085472).

Almost surely, 2^78051893 is an apocalyptic number.

It is an amenable number.

78051893 is a deficient number, since it is larger than the sum of its proper divisors (2631883).

78051893 is a wasteful number, since it uses less digits than its factorization.

78051893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 78051893 is about 8834.6982404607. The cubic root of 78051893 is about 427.3605997617.

The spelling of 78051893 in words is "seventy-eight million, fifty-one thousand, eight hundred ninety-three".