1020613157 has 4 divisors (see below), whose sum is σ = 1023537900. Its totient is φ = 1017688416.

The previous prime is 1020613133. The next prime is 1020613159. The reversal of 1020613157 is 7513160201.

1020613157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 686125636 + 334487521 = 26194^2 + 18289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020613157 - 2¹⁰ = 1020612133 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 (1020613159) 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, 1461848 + ... + 1462545.

It is an arithmetic number, because the mean of its divisors is an integer number (255884475).

Almost surely, 2^1020613157 is an apocalyptic number.

It is an amenable number.

1020613157 is a deficient number, since it is larger than the sum of its proper divisors (2924743).

1020613157 is an equidigital number, since it uses as much as digits as its factorization.

1020613157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924742.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1020613157 is about 31947.0367483433. The cubic root of 1020613157 is about 1006.8243743069.

Adding to 1020613157 its reverse (7513160201), we get a palindrome (8533773358).

The spelling of 1020613157 in words is "one billion, twenty million, six hundred thirteen thousand, one hundred fifty-seven".