901981603 has 4 divisors (see below), whose sum is σ = 902096208. Its totient is φ = 901867000.

The previous prime is 901981583. The next prime is 901981627. The reversal of 901981603 is 306189109.

901981603 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 is a cyclic number.

It is not a de Polignac number, because 901981603 - 2¹³ = 901973411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901981643) 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, 44551 + ... + 61552.

It is an arithmetic number, because the mean of its divisors is an integer number (225524052).

Almost surely, 2^901981603 is an apocalyptic number.

901981603 is a deficient number, since it is larger than the sum of its proper divisors (114605).

901981603 is a wasteful number, since it uses less digits than its factorization.

901981603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114604.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 901981603 is about 30033.0085572525. The cubic root of 901981603 is about 966.1974639444.

The spelling of 901981603 in words is "nine hundred one million, nine hundred eighty-one thousand, six hundred three".