1426668731 has 8 divisors (see below), whose sum is σ = 1450296144. Its totient is φ = 1403234560.

The previous prime is 1426668703. The next prime is 1426668743. The reversal of 1426668731 is 1378666241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1426668731 - 2¹⁰ = 1426667707 is a prime.

It is a super-2 number, since 2×1426668731² = 4070767336026300722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1426668631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33386 + ... + 62991.

It is an arithmetic number, because the mean of its divisors is an integer number (181287018).

Almost surely, 2^1426668731 is an apocalyptic number.

1426668731 is a deficient number, since it is larger than the sum of its proper divisors (23627413).

1426668731 is a wasteful number, since it uses less digits than its factorization.

1426668731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96621.

The product of its digits is 290304, while the sum is 44.

The square root of 1426668731 is about 37771.2685913513. The cubic root of 1426668731 is about 1125.7476461675.

The spelling of 1426668731 in words is "one billion, four hundred twenty-six million, six hundred sixty-eight thousand, seven hundred thirty-one".