149678687194 has 8 divisors (see below), whose sum is σ = 226156848948. Its totient is φ = 74293070880.

The previous prime is 149678687173. The next prime is 149678687201. The reversal of 149678687194 is 491786876941.

149678687194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 136779406569 + 12899280625 = 369837^2 + 113575^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273136017 + ... + 273136564.

Almost surely, 2^149678687194 is an apocalyptic number.

149678687194 is a deficient number, since it is larger than the sum of its proper divisors (76478161754).

149678687194 is a wasteful number, since it uses less digits than its factorization.

149678687194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546272720.

The product of its digits is 146313216, while the sum is 70.

The spelling of 149678687194 in words is "one hundred forty-nine billion, six hundred seventy-eight million, six hundred eighty-seven thousand, one hundred ninety-four".