838157534 has 4 divisors (see below), whose sum is σ = 1257236304. Its totient is φ = 419078766.

The previous prime is 838157501. The next prime is 838157539. The reversal of 838157534 is 435751838.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 435751838 = 2 ⋅217875919.

It is a super-2 number, since 2×838157534² = 1405016103601922312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838157539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209539382 + ... + 209539385.

It is an arithmetic number, because the mean of its divisors is an integer number (314309076).

Almost surely, 2^838157534 is an apocalyptic number.

838157534 is a deficient number, since it is larger than the sum of its proper divisors (419078770).

838157534 is a wasteful number, since it uses less digits than its factorization.

838157534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419078769.

The product of its digits is 403200, while the sum is 44.

The square root of 838157534 is about 28950.9504852604. The cubic root of 838157534 is about 942.8484346587.

The spelling of 838157534 in words is "eight hundred thirty-eight million, one hundred fifty-seven thousand, five hundred thirty-four".