1315742408 has 8 divisors (see below), whose sum is σ = 2467017030. Its totient is φ = 657871200.

The previous prime is 1315742401. The next prime is 1315742431. The reversal of 1315742408 is 8042475131.

It can be written as a sum of positive squares in only one way, i.e., 1294416484 + 21325924 = 35978^2 + 4618^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1315742408³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1315742401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82233893 + ... + 82233908.

Almost surely, 2^1315742408 is an apocalyptic number.

It is an amenable number.

1315742408 is a deficient number, since it is larger than the sum of its proper divisors (1151274622).

1315742408 is a wasteful number, since it uses less digits than its factorization.

1315742408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164467807 (or 164467803 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 1315742408 is about 36273.1637440133. The cubic root of 1315742408 is about 1095.7806427820.

The spelling of 1315742408 in words is "one billion, three hundred fifteen million, seven hundred forty-two thousand, four hundred eight".