194380039651 has 16 divisors (see below), whose sum is σ = 223441702848. Its totient is φ = 165642192000.

The previous prime is 194380039631. The next prime is 194380039669. The reversal of 194380039651 is 156930083491.

It is a cyclic number.

It is not a de Polignac number, because 194380039651 - 2¹³ = 194380031459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194380039595 and 194380039604.

It is not an unprimeable number, because it can be changed into a prime (194380039631) 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, 4668441 + ... + 4709893.

It is an arithmetic number, because the mean of its divisors is an integer number (13965106428).

Almost surely, 2^194380039651 is an apocalyptic number.

194380039651 is a deficient number, since it is larger than the sum of its proper divisors (29061663197).

194380039651 is a wasteful number, since it uses less digits than its factorization.

194380039651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45342.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 194380039651 in words is "one hundred ninety-four billion, three hundred eighty million, thirty-nine thousand, six hundred fifty-one".