1197381505 has 8 divisors (see below), whose sum is σ = 1460413224. Its totient is φ = 942201600.

The previous prime is 1197381499. The next prime is 1197381509. The reversal of 1197381505 is 5051837911.

It can be written as a sum of positive squares in 4 ways, for example, as 94012416 + 1103369089 = 9696^2 + 33217^2 .

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

It is not a de Polignac number, because 1197381505 - 2⁵ = 1197381473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197381509) 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, 1962616 + ... + 1963225.

It is an arithmetic number, because the mean of its divisors is an integer number (182551653).

Almost surely, 2^1197381505 is an apocalyptic number.

It is an amenable number.

1197381505 is a deficient number, since it is larger than the sum of its proper divisors (263031719).

1197381505 is an equidigital number, since it uses as much as digits as its factorization.

1197381505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925907.

The product of its (nonzero) digits is 37800, while the sum is 40.

The square root of 1197381505 is about 34603.2007912563. The cubic root of 1197381505 is about 1061.8850712566.

The spelling of 1197381505 in words is "one billion, one hundred ninety-seven million, three hundred eighty-one thousand, five hundred five".