1300138551 has 12 divisors (see below), whose sum is σ = 1906008312. Its totient is φ = 853821936.

The previous prime is 1300138547. The next prime is 1300138561. The reversal of 1300138551 is 1558310031.

It is not a de Polignac number, because 1300138551 - 2² = 1300138547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300138501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1077456 + ... + 1078661.

It is an arithmetic number, because the mean of its divisors is an integer number (158834026).

Almost surely, 2^1300138551 is an apocalyptic number.

1300138551 is a deficient number, since it is larger than the sum of its proper divisors (605869761).

1300138551 is a wasteful number, since it uses less digits than its factorization.

1300138551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156190 (or 2156187 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1300138551 is about 36057.4340601214. The cubic root of 1300138551 is about 1091.4316543954.

Adding to 1300138551 its reverse (1558310031), we get a palindrome (2858448582).

The spelling of 1300138551 in words is "one billion, three hundred million, one hundred thirty-eight thousand, five hundred fifty-one".