1187494347 has 16 divisors (see below), whose sum is σ = 1779257088. Its totient is φ = 698992800.

The previous prime is 1187494327. The next prime is 1187494397. The reversal of 1187494347 is 7434947811.

It is a happy number.

It is not a de Polignac number, because 1187494347 - 2⁷ = 1187494219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1187494296 and 1187494305.

It is not an unprimeable number, because it can be changed into a prime (1187494307) 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, 661029 + ... + 662822.

It is an arithmetic number, because the mean of its divisors is an integer number (111203568).

Almost surely, 2^1187494347 is an apocalyptic number.

1187494347 is a deficient number, since it is larger than the sum of its proper divisors (591762741).

1187494347 is a wasteful number, since it uses less digits than its factorization.

1187494347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323890.

The product of its digits is 677376, while the sum is 48.

The square root of 1187494347 is about 34460.0398577831. The cubic root of 1187494347 is about 1058.9542157024.

The spelling of 1187494347 in words is "one billion, one hundred eighty-seven million, four hundred ninety-four thousand, three hundred forty-seven".