78148883 has 4 divisors (see below), whose sum is σ = 78628488. Its totient is φ = 77669280.

The previous prime is 78148849. The next prime is 78148891. The reversal of 78148883 is 38884187.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38884187 = 67 ⋅580361.

It is a cyclic number.

It is not a de Polignac number, because 78148883 - 2¹⁶ = 78083347 is a prime.

It is a super-2 number, since 2×78148883² = 12214495828295378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78148183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239558 + ... + 239883.

It is an arithmetic number, because the mean of its divisors is an integer number (19657122).

Almost surely, 2^78148883 is an apocalyptic number.

78148883 is a deficient number, since it is larger than the sum of its proper divisors (479605).

78148883 is a wasteful number, since it uses less digits than its factorization.

78148883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479604.

The product of its digits is 344064, while the sum is 47.

The square root of 78148883 is about 8840.1856880950. The cubic root of 78148883 is about 427.5375442102.

The spelling of 78148883 in words is "seventy-eight million, one hundred forty-eight thousand, eight hundred eighty-three".