1603437180361 has 3 divisors (see below), whose sum is σ = 1603438446631. Its totient is φ = 1603435914092.

The previous prime is 1603437180353. The next prime is 1603437180413. The reversal of 1603437180361 is 1630817343061.

The square root of 1603437180361 is 1266269.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 617904472761 + 985532707600 = 786069^2 + 992740^2 .

It is not a de Polignac number, because 1603437180361 - 2³ = 1603437180353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1603437186361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 633135 + ... + 1899403.

Almost surely, 2^{1603437180361} is an apocalyptic number.

1603437180361 is the 1266269-th square number.

1603437180361 is the 633135-th centered octagonal number.

It is an amenable number.

1603437180361 is a deficient number, since it is larger than the sum of its proper divisors (1266270).

1603437180361 is an frugal number, since it uses more digits than its factorization.

1603437180361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532538 (or 1266269 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 1603437180361 in words is "one trillion, six hundred three billion, four hundred thirty-seven million, one hundred eighty thousand, three hundred sixty-one".