1406788551 has 12 divisors (see below), whose sum is σ = 2322317712. Its totient is φ = 803879136.

The previous prime is 1406788549. The next prime is 1406788561. The reversal of 1406788551 is 1558876041.

1406788551 is a `hidden beast` number, since 14 + 0 + 6 + 7 + 88 + 551 = 666.

It is not a de Polignac number, because 1406788551 - 2¹ = 1406788549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1406788497 and 1406788506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406788501) 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 11 ways as a sum of consecutive naturals, for example, 11164926 + ... + 11165051.

It is an arithmetic number, because the mean of its divisors is an integer number (193526476).

Almost surely, 2^1406788551 is an apocalyptic number.

1406788551 is a deficient number, since it is larger than the sum of its proper divisors (915529161).

1406788551 is a wasteful number, since it uses less digits than its factorization.

1406788551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22329990 (or 22329987 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The square root of 1406788551 is about 37507.1799926361. The cubic root of 1406788551 is about 1120.4941885343.

The spelling of 1406788551 in words is "one billion, four hundred six million, seven hundred eighty-eight thousand, five hundred fifty-one".