1600001156 has 24 divisors (see below), whose sum is σ = 3016685784. Its totient is φ = 738144000.

The previous prime is 1600001131. The next prime is 1600001159. The reversal of 1600001156 is 6511000061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1156 + 1600000000 = 34^2 + 40000^2 .

It is not an unprimeable number, because it can be changed into a prime (1600001159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150926 + ... + 161178.

It is an arithmetic number, because the mean of its divisors is an integer number (125695241).

Almost surely, 2^1600001156 is an apocalyptic number.

It is an amenable number.

1600001156 is a deficient number, since it is larger than the sum of its proper divisors (1416684628).

1600001156 is a wasteful number, since it uses less digits than its factorization.

1600001156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13271 (or 13269 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1600001156 is about 40000.0144499974. The cubic root of 1600001156 is about 1169.6073769655.

It can be divided in two parts, 160000 and 1156, that multiplied together give a square (184960000 = 13600²).

The spelling of 1600001156 in words is "one billion, six hundred million, one thousand, one hundred fifty-six".