903581781648 has 160 divisors (see below), whose sum is σ = 2965602189312. Its totient is φ = 230619916800.

The previous prime is 903581781643. The next prime is 903581781691. The reversal of 903581781648 is 846187185309.

It is a super-2 number, since 2×903581781648² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 903581781591 and 903581781600.

It is not an unprimeable number, because it can be changed into a prime (903581781643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3201108 + ... + 3471923.

Almost surely, 2^903581781648 is an apocalyptic number.

It is an amenable number.

903581781648 is an abundant number, since it is smaller than the sum of its proper divisors (2062020407664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

903581781648 is a wasteful number, since it uses less digits than its factorization.

903581781648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673093 (or 6673087 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 903581781648 in words is "nine hundred three billion, five hundred eighty-one million, seven hundred eighty-one thousand, six hundred forty-eight".