157946193 has 20 divisors (see below), whose sum is σ = 236403508. Its totient is φ = 105092640.

The previous prime is 157946189. The next prime is 157946203. The reversal of 157946193 is 391649751.

It can be written as a sum of positive squares in 2 ways, for example, as 4359744 + 153586449 = 2088^2 + 12393^2 .

It is not a de Polignac number, because 157946193 - 2² = 157946189 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 (157947193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48063 + ... + 51243.

Almost surely, 2^157946193 is an apocalyptic number.

It is an amenable number.

157946193 is a deficient number, since it is larger than the sum of its proper divisors (78457315).

157946193 is an equidigital number, since it uses as much as digits as its factorization.

157946193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806 (or 3797 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 157946193 is about 12567.6645801835. The cubic root of 157946193 is about 540.5506420191.

The spelling of 157946193 in words is "one hundred fifty-seven million, nine hundred forty-six thousand, one hundred ninety-three".