3642157 has 2 divisors, whose sum is σ = 3642158. Its totient is φ = 3642156.

The previous prime is 3642101. The next prime is 3642203. The reversal of 3642157 is 7512463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3493161 + 148996 = 1869^2 + 386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3642157 is a prime.

It is a super-2 number, since 2×3642157² = 26530615225298, which contains 22 as substring.

It is equal to p₂₅₉₅₇₀ and since 3642157 and 259570 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3042157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821078 + 1821079.

It is an arithmetic number, because the mean of its divisors is an integer number (1821079).

Almost surely, 2^3642157 is an apocalyptic number.

It is an amenable number.

3642157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3642157 is an equidigital number, since it uses as much as digits as its factorization.

3642157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 3642157 is about 1908.4436067120. The cubic root of 3642157 is about 153.8578127639.

The spelling of 3642157 in words is "three million, six hundred forty-two thousand, one hundred fifty-seven".