1187348401 has 2 divisors, whose sum is σ = 1187348402. Its totient is φ = 1187348400.

The previous prime is 1187348321. The next prime is 1187348411. The reversal of 1187348401 is 1048437811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1169708401 + 17640000 = 34201^2 + 4200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1187348401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1187348411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593674200 + 593674201.

It is an arithmetic number, because the mean of its divisors is an integer number (593674201).

Almost surely, 2^1187348401 is an apocalyptic number.

It is an amenable number.

1187348401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187348401 is an equidigital number, since it uses as much as digits as its factorization.

1187348401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 1187348401 is about 34457.9221805378. The cubic root of 1187348401 is about 1058.9108312253.

The spelling of 1187348401 in words is "one billion, one hundred eighty-seven million, three hundred forty-eight thousand, four hundred one".