1187373397 has 32 divisors (see below), whose sum is σ = 1417011200. Its totient is φ = 974083968.

The previous prime is 1187373371. The next prime is 1187373427. The reversal of 1187373397 is 7933737811.

It is not a de Polignac number, because 1187373397 - 2¹⁵ = 1187340629 is a prime.

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 1187373397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187373197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2704504 + ... + 2704942.

It is an arithmetic number, because the mean of its divisors is an integer number (44281600).

Almost surely, 2^1187373397 is an apocalyptic number.

It is an amenable number.

1187373397 is a deficient number, since it is larger than the sum of its proper divisors (229637803).

1187373397 is an equidigital number, since it uses as much as digits as its factorization.

1187373397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its digits is 666792, while the sum is 49.

The square root of 1187373397 is about 34458.2848818684. The cubic root of 1187373397 is about 1058.9182618860.

The spelling of 1187373397 in words is "one billion, one hundred eighty-seven million, three hundred seventy-three thousand, three hundred ninety-seven".