1001357156 has 12 divisors (see below), whose sum is σ = 1772065260. Its totient is φ = 495052800.

The previous prime is 1001357131. The next prime is 1001357173. The reversal of 1001357156 is 6517531001.

It can be written as a sum of positive squares in 2 ways, for example, as 516652900 + 484704256 = 22730^2 + 22016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406045 + ... + 1406756.

It is an arithmetic number, because the mean of its divisors is an integer number (147672105).

Almost surely, 2^1001357156 is an apocalyptic number.

It is an amenable number.

1001357156 is a deficient number, since it is larger than the sum of its proper divisors (770708104).

1001357156 is a wasteful number, since it uses less digits than its factorization.

1001357156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812894 (or 2812892 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 1001357156 is about 31644.2278464809. The cubic root of 1001357156 is about 1000.4521808350.

Adding to 1001357156 its reverse (6517531001), we get a palindrome (7518888157).

The spelling of 1001357156 in words is "one billion, one million, three hundred fifty-seven thousand, one hundred fifty-six".