1491467401 has 2 divisors, whose sum is σ = 1491467402. Its totient is φ = 1491467400.

The previous prime is 1491467387. The next prime is 1491467437. The reversal of 1491467401 is 1047641941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1489574025 + 1893376 = 38595^2 + 1376^2 .

It is an emirp because it is prime and its reverse (1047641941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1491467401 - 2¹³ = 1491459209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1491461401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745733700 + 745733701.

It is an arithmetic number, because the mean of its divisors is an integer number (745733701).

Almost surely, 2^1491467401 is an apocalyptic number.

It is an amenable number.

1491467401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491467401 is an equidigital number, since it uses as much as digits as its factorization.

1491467401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1491467401 is about 38619.5209835648. The cubic root of 1491467401 is about 1142.5395833046.

The spelling of 1491467401 in words is "one billion, four hundred ninety-one million, four hundred sixty-seven thousand, four hundred one".