1197449643 has 16 divisors (see below), whose sum is σ = 1778706720. Its totient is φ = 711481344.

The previous prime is 1197449641. The next prime is 1197449657. The reversal of 1197449643 is 3469447911.

It is not a de Polignac number, because 1197449643 - 2¹ = 1197449641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1197449592 and 1197449601.

It is not an unprimeable number, because it can be changed into a prime (1197449641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528246 + ... + 530507.

It is an arithmetic number, because the mean of its divisors is an integer number (111169170).

Almost surely, 2^1197449643 is an apocalyptic number.

1197449643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1197449643 is a deficient number, since it is larger than the sum of its proper divisors (581257077).

1197449643 is a wasteful number, since it uses less digits than its factorization.

1197449643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058798.

The product of its digits is 653184, while the sum is 48.

The square root of 1197449643 is about 34604.1853393488. The cubic root of 1197449643 is about 1061.9052133617.

The spelling of 1197449643 in words is "one billion, one hundred ninety-seven million, four hundred forty-nine thousand, six hundred forty-three".