1201545634 has 16 divisors (see below), whose sum is σ = 1810828800. Its totient is φ = 597943584.

The previous prime is 1201545629. The next prime is 1201545643. The reversal of 1201545634 is 4365451021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201545596 and 1201545605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419134 + ... + 421990.

It is an arithmetic number, because the mean of its divisors is an integer number (113176800).

Almost surely, 2^1201545634 is an apocalyptic number.

1201545634 is a deficient number, since it is larger than the sum of its proper divisors (609283166).

1201545634 is a wasteful number, since it uses less digits than its factorization.

1201545634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1201545634 is about 34663.3182773952. The cubic root of 1201545634 is about 1063.1146182192.

Adding to 1201545634 its reverse (4365451021), we get a palindrome (5566996655).

The spelling of 1201545634 in words is "one billion, two hundred one million, five hundred forty-five thousand, six hundred thirty-four".