9138951400 has 24 divisors (see below), whose sum is σ = 21248062470. Its totient is φ = 3655580480.

The previous prime is 9138951397. The next prime is 9138951401. The reversal of 9138951400 is 41598319.

It can be written as a sum of positive squares in 3 ways, for example, as 5615104356 + 3523847044 = 74934^2 + 59362^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (9138951401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22847179 + ... + 22847578.

Almost surely, 2^9138951400 is an apocalyptic number.

It is an amenable number.

9138951400 is an abundant number, since it is smaller than the sum of its proper divisors (12109111070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9138951400 is a wasteful number, since it uses less digits than its factorization.

9138951400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45694773 (or 45694764 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 9138951400 is about 95597.8629468253. The cubic root of 9138951400 is about 2090.7340354905.

The spelling of 9138951400 in words is "nine billion, one hundred thirty-eight million, nine hundred fifty-one thousand, four hundred".