194010297157 has 4 divisors (see below), whose sum is σ = 205422667596. Its totient is φ = 182597926720.

The previous prime is 194010297127. The next prime is 194010297167. The reversal of 194010297157 is 751792010491.

It is a Cunningham number, because it is equal to 440466²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751792010491 = 797 ⋅943277303.

It can be written as a sum of positive squares in 2 ways, for example, as 151045713316 + 42964583841 = 388646^2 + 207279^2 .

It is a cyclic number.

It is not a de Polignac number, because 194010297157 - 2²³ = 194001908549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194010297127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5706185194 + ... + 5706185227.

It is an arithmetic number, because the mean of its divisors is an integer number (51355666899).

Almost surely, 2^194010297157 is an apocalyptic number.

194010297157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

194010297157 is a deficient number, since it is larger than the sum of its proper divisors (11412370439).

194010297157 is a wasteful number, since it uses less digits than its factorization.

194010297157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11412370438.

The product of its (nonzero) digits is 158760, while the sum is 46.

The spelling of 194010297157 in words is "one hundred ninety-four billion, ten million, two hundred ninety-seven thousand, one hundred fifty-seven".