1438148763 has 10 divisors (see below), whose sum is σ = 2148345804. Its totient is φ = 958765788.

The previous prime is 1438148753. The next prime is 1438148771. The reversal of 1438148763 is 3678418341.

1438148763 is a `hidden beast` number, since 1 + 438 + 148 + 76 + 3 = 666.

It is not a de Polignac number, because 1438148763 - 2²⁹ = 901277851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438148743) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8877381 + ... + 8877542.

Almost surely, 2^1438148763 is an apocalyptic number.

1438148763 is a deficient number, since it is larger than the sum of its proper divisors (710197041).

1438148763 is an equidigital number, since it uses as much as digits as its factorization.

1438148763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17754935 (or 17754926 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1438148763 is about 37922.9318882388. The cubic root of 1438148763 is about 1128.7591158302.

The spelling of 1438148763 in words is "one billion, four hundred thirty-eight million, one hundred forty-eight thousand, seven hundred sixty-three".