1012161603 has 8 divisors (see below), whose sum is σ = 1386023248. Its totient is φ = 656537184.

The previous prime is 1012161551. The next prime is 1012161637. The reversal of 1012161603 is 3061612101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012161603 - 2¹³ = 1012153411 is a prime.

It is a super-2 number, since 2×1012161603² = 2048942221175059218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012161603.

It is not an unprimeable number, because it can be changed into a prime (1012161653) 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, 4559176 + ... + 4559397.

It is an arithmetic number, because the mean of its divisors is an integer number (173252906).

Almost surely, 2^1012161603 is an apocalyptic number.

1012161603 is a deficient number, since it is larger than the sum of its proper divisors (373861645).

1012161603 is an equidigital number, since it uses as much as digits as its factorization.

1012161603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118613.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1012161603 is about 31814.4873131723. The cubic root of 1012161603 is about 1004.0375439657.

Adding to 1012161603 its reverse (3061612101), we get a palindrome (4073773704).

The spelling of 1012161603 in words is "one billion, twelve million, one hundred sixty-one thousand, six hundred three".