1138874951 has 2 divisors, whose sum is σ = 1138874952. Its totient is φ = 1138874950.

The previous prime is 1138874939. The next prime is 1138874977. The reversal of 1138874951 is 1594788311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138874951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1138874896 and 1138874905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138874351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569437475 + 569437476.

It is an arithmetic number, because the mean of its divisors is an integer number (569437476).

Almost surely, 2^1138874951 is an apocalyptic number.

1138874951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138874951 is an equidigital number, since it uses as much as digits as its factorization.

1138874951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 47.

The square root of 1138874951 is about 33747.2213819153. The cubic root of 1138874951 is about 1044.3001658755.

The spelling of 1138874951 in words is "one billion, one hundred thirty-eight million, eight hundred seventy-four thousand, nine hundred fifty-one".