1387248434 has 16 divisors (see below), whose sum is σ = 2444662080. Its totient is φ = 582062160.

The previous prime is 1387248391. The next prime is 1387248449. The reversal of 1387248434 is 4348427831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2424974 + ... + 2425545.

It is an arithmetic number, because the mean of its divisors is an integer number (152791380).

Almost surely, 2^1387248434 is an apocalyptic number.

1387248434 is a deficient number, since it is larger than the sum of its proper divisors (1057413646).

1387248434 is a wasteful number, since it uses less digits than its factorization.

1387248434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850545.

The product of its digits is 516096, while the sum is 44.

The square root of 1387248434 is about 37245.7841104198. The cubic root of 1387248434 is about 1115.2821405899.

The spelling of 1387248434 in words is "one billion, three hundred eighty-seven million, two hundred forty-eight thousand, four hundred thirty-four".