1213453154 has 8 divisors (see below), whose sum is σ = 1820344320. Its totient is φ = 606671716.

The previous prime is 1213453151. The next prime is 1213453187. The reversal of 1213453154 is 4513543121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1213453151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10967 + ... + 50469.

It is an arithmetic number, because the mean of its divisors is an integer number (227543040).

Almost surely, 2^1213453154 is an apocalyptic number.

1213453154 is a deficient number, since it is larger than the sum of its proper divisors (606891166).

1213453154 is a wasteful number, since it uses less digits than its factorization.

1213453154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54864.

The product of its digits is 7200, while the sum is 29.

The square root of 1213453154 is about 34834.6544980713. The cubic root of 1213453154 is about 1066.6149623158.

Adding to 1213453154 its reverse (4513543121), we get a palindrome (5726996275).

The spelling of 1213453154 in words is "one billion, two hundred thirteen million, four hundred fifty-three thousand, one hundred fifty-four".