1354145138 has 4 divisors (see below), whose sum is σ = 2031217710. Its totient is φ = 677072568.

The previous prime is 1354145113. The next prime is 1354145147. The reversal of 1354145138 is 8315414531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1210552849 + 143592289 = 34793^2 + 11983^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1354145098 and 1354145107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338536283 + ... + 338536286.

Almost surely, 2^1354145138 is an apocalyptic number.

1354145138 is a deficient number, since it is larger than the sum of its proper divisors (677072572).

1354145138 is an equidigital number, since it uses as much as digits as its factorization.

1354145138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677072571.

The product of its digits is 28800, while the sum is 35.

The square root of 1354145138 is about 36798.7110915586. The cubic root of 1354145138 is about 1106.3394655937.

Adding to 1354145138 its reverse (8315414531), we get a palindrome (9669559669).

The spelling of 1354145138 in words is "one billion, three hundred fifty-four million, one hundred forty-five thousand, one hundred thirty-eight".