1601401156 has 12 divisors (see below), whose sum is σ = 2967302268. Its totient is φ = 753600512.

The previous prime is 1601401127. The next prime is 1601401159. The reversal of 1601401156 is 6511041061.

It can be written as a sum of positive squares in 2 ways, for example, as 955428100 + 645973056 = 30910^2 + 25416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1601401156.

It is not an unprimeable number, because it can be changed into a prime (1601401159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11774941 + ... + 11775076.

It is an arithmetic number, because the mean of its divisors is an integer number (247275189).

Almost surely, 2^1601401156 is an apocalyptic number.

It is an amenable number.

1601401156 is a deficient number, since it is larger than the sum of its proper divisors (1365901112).

1601401156 is a wasteful number, since it uses less digits than its factorization.

1601401156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23550038 (or 23550036 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1601401156 is about 40017.5106172286. The cubic root of 1601401156 is about 1169.9484127546.

The spelling of 1601401156 in words is "one billion, six hundred one million, four hundred one thousand, one hundred fifty-six".