1428615401 has 2 divisors, whose sum is σ = 1428615402. Its totient is φ = 1428615400.

The previous prime is 1428615389. The next prime is 1428615403. The reversal of 1428615401 is 1045168241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 879181801 + 549433600 = 29651^2 + 23440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428615401 is a prime.

Together with 1428615403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1428615403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714307700 + 714307701.

It is an arithmetic number, because the mean of its divisors is an integer number (714307701).

Almost surely, 2^1428615401 is an apocalyptic number.

It is an amenable number.

1428615401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428615401 is an equidigital number, since it uses as much as digits as its factorization.

1428615401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 1428615401 is about 37797.0289969992. The cubic root of 1428615401 is about 1126.2594358911.

The spelling of 1428615401 in words is "one billion, four hundred twenty-eight million, six hundred fifteen thousand, four hundred one".