1491000427 has 16 divisors (see below), whose sum is σ = 1723986880. Its totient is φ = 1263071232.

The previous prime is 1491000391. The next prime is 1491000439. The reversal of 1491000427 is 7240001941.

It is a cyclic number.

It is not a de Polignac number, because 1491000427 - 2⁷ = 1491000299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1491000395 and 1491000404.

It is not an unprimeable number, because it can be changed into a prime (1491000457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328123 + ... + 332635.

It is an arithmetic number, because the mean of its divisors is an integer number (107749180).

Almost surely, 2^1491000427 is an apocalyptic number.

1491000427 is the 22294-th hex number.

1491000427 is a deficient number, since it is larger than the sum of its proper divisors (232986453).

1491000427 is a wasteful number, since it uses less digits than its factorization.

1491000427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1491000427 is about 38613.4746817740. The cubic root of 1491000427 is about 1142.4203289444.

The spelling of 1491000427 in words is "one billion, four hundred ninety-one million, four hundred twenty-seven", and thus it is an aban number.