18970255634 has 16 divisors (see below), whose sum is σ = 32112659520. Its totient is φ = 8325503760.

The previous prime is 18970255631. The next prime is 18970255637. The reversal of 18970255634 is 43655207981.

It is a happy number.

18970255634 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (18970255631) and next prime (18970255637).

It is not an unprimeable number, because it can be changed into a prime (18970255631) 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, 14866334 + ... + 14867609.

It is an arithmetic number, because the mean of its divisors is an integer number (2007041220).

It is a 2-persistent number, because it is pandigital, and so is 2⋅18970255634 = 37940511268, but 3⋅18970255634 = 56910766902 is not.

Almost surely, 2^18970255634 is an apocalyptic number.

18970255634 is a deficient number, since it is larger than the sum of its proper divisors (13142403886).

18970255634 is a wasteful number, since it uses less digits than its factorization.

18970255634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29733985.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 18970255634 in words is "eighteen billion, nine hundred seventy million, two hundred fifty-five thousand, six hundred thirty-four".