1427667461 has 4 divisors (see below), whose sum is σ = 1557455424. Its totient is φ = 1297879500.

The previous prime is 1427667457. The next prime is 1427667473. The reversal of 1427667461 is 1647667241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1647667241 = 11 ⋅149787931.

It is a cyclic number.

It is not a de Polignac number, because 1427667461 - 2² = 1427667457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427667481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64893965 + ... + 64893986.

It is an arithmetic number, because the mean of its divisors is an integer number (389363856).

Almost surely, 2^1427667461 is an apocalyptic number.

1427667461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1427667461 is a deficient number, since it is larger than the sum of its proper divisors (129787963).

1427667461 is a wasteful number, since it uses less digits than its factorization.

1427667461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129787962.

The product of its digits is 338688, while the sum is 44.

The square root of 1427667461 is about 37784.4870416418. The cubic root of 1427667461 is about 1126.0102756219.

The spelling of 1427667461 in words is "one billion, four hundred twenty-seven million, six hundred sixty-seven thousand, four hundred sixty-one".