1052698138 has 4 divisors (see below), whose sum is σ = 1579047210. Its totient is φ = 526349068.

The previous prime is 1052698121. The next prime is 1052698139. The reversal of 1052698138 is 8318962501.

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., 1051250929 + 1447209 = 32423^2 + 1203^2 .

It is a super-2 number, since 2×1052698138² = 2216346739497334088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1052698094 and 1052698103.

It is not an unprimeable number, because it can be changed into a prime (1052698139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263174533 + ... + 263174536.

Almost surely, 2^1052698138 is an apocalyptic number.

1052698138 is a deficient number, since it is larger than the sum of its proper divisors (526349072).

1052698138 is an equidigital number, since it uses as much as digits as its factorization.

1052698138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526349071.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 1052698138 is about 32445.3099538285. The cubic root of 1052698138 is about 1017.2662082411.

The spelling of 1052698138 in words is "one billion, fifty-two million, six hundred ninety-eight thousand, one hundred thirty-eight".