1427078769 has 16 divisors (see below), whose sum is σ = 2049552384. Its totient is φ = 880664400.

The previous prime is 1427078747. The next prime is 1427078773. The reversal of 1427078769 is 9678707241.

It is not a de Polignac number, because 1427078769 - 2¹⁶ = 1427013233 is a prime.

It is a super-2 number, since 2×1427078769² = 4073107625861110722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1427078069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331447 + ... + 335724.

It is an arithmetic number, because the mean of its divisors is an integer number (128097024).

Almost surely, 2^1427078769 is an apocalyptic number.

It is an amenable number.

1427078769 is a deficient number, since it is larger than the sum of its proper divisors (622473615).

1427078769 is a wasteful number, since it uses less digits than its factorization.

1427078769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667228.

The product of its (nonzero) digits is 1185408, while the sum is 51.

The square root of 1427078769 is about 37776.6961101682. The cubic root of 1427078769 is about 1125.8554859876.

It can be divided in two parts, 14270 and 78769, that added together give a palindrome (93039).

The spelling of 1427078769 in words is "one billion, four hundred twenty-seven million, seventy-eight thousand, seven hundred sixty-nine".