1405451197 has 2 divisors, whose sum is σ = 1405451198. Its totient is φ = 1405451196.

The previous prime is 1405451143. The next prime is 1405451207. The reversal of 1405451197 is 7911545041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1405200196 + 251001 = 37486^2 + 501^2 .

It is an emirp because it is prime and its reverse (7911545041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1405451197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1405451137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702725598 + 702725599.

It is an arithmetic number, because the mean of its divisors is an integer number (702725599).

Almost surely, 2^1405451197 is an apocalyptic number.

It is an amenable number.

1405451197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405451197 is an equidigital number, since it uses as much as digits as its factorization.

1405451197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 1405451197 is about 37489.3477804029. The cubic root of 1405451197 is about 1120.1390125603.

The spelling of 1405451197 in words is "one billion, four hundred five million, four hundred fifty-one thousand, one hundred ninety-seven".