78149303 has 2 divisors, whose sum is σ = 78149304. Its totient is φ = 78149302.

The previous prime is 78149263. The next prime is 78149317. The reversal of 78149303 is 30394187.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78149303 - 2¹⁴ = 78132919 is a prime.

It is a super-2 number, since 2×78149303² = 12214627118771618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78149333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39074651 + 39074652.

It is an arithmetic number, because the mean of its divisors is an integer number (39074652).

Almost surely, 2^78149303 is an apocalyptic number.

78149303 is a deficient number, since it is larger than the sum of its proper divisors (1).

78149303 is an equidigital number, since it uses as much as digits as its factorization.

78149303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 78149303 is about 8840.2094432202. The cubic root of 78149303 is about 427.5383101219.

The spelling of 78149303 in words is "seventy-eight million, one hundred forty-nine thousand, three hundred three".