149694893309 has 16 divisors (see below), whose sum is σ = 163534331520. Its totient is φ = 136188803520.

The previous prime is 149694893281. The next prime is 149694893311. The reversal of 149694893309 is 903398496941.

It is a cyclic number.

It is not a de Polignac number, because 149694893309 - 2²⁸ = 149426457853 is a prime.

It is a super-2 number, since 2×149694893309² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149694893339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2955254 + ... + 3005480.

It is an arithmetic number, because the mean of its divisors is an integer number (10220895720).

Almost surely, 2^149694893309 is an apocalyptic number.

It is an amenable number.

149694893309 is a deficient number, since it is larger than the sum of its proper divisors (13839438211).

149694893309 is a wasteful number, since it uses less digits than its factorization.

149694893309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53540.

The product of its (nonzero) digits is 45349632, while the sum is 65.

The spelling of 149694893309 in words is "one hundred forty-nine billion, six hundred ninety-four million, eight hundred ninety-three thousand, three hundred nine".