1138476947 has 2 divisors, whose sum is σ = 1138476948. Its totient is φ = 1138476946.

The previous prime is 1138476917. The next prime is 1138476967. The reversal of 1138476947 is 7496748311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1138476947 - 2⁶ = 1138476883 is a prime.

It is a super-2 number, since 2×1138476947² = 2592259517700881618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1138476895 and 1138476904.

It is not a weakly prime, because it can be changed into another prime (1138476917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569238473 + 569238474.

It is an arithmetic number, because the mean of its divisors is an integer number (569238474).

Almost surely, 2^1138476947 is an apocalyptic number.

1138476947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138476947 is an equidigital number, since it uses as much as digits as its factorization.

1138476947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 1138476947 is about 33741.3240255921. The cubic root of 1138476947 is about 1044.1785007563.

The spelling of 1138476947 in words is "one billion, one hundred thirty-eight million, four hundred seventy-six thousand, nine hundred forty-seven".