1219749072 has 40 divisors (see below), whose sum is σ = 3181623744. Its totient is φ = 402633984.

The previous prime is 1219749059. The next prime is 1219749079. The reversal of 1219749072 is 2709479121.

It is a super-2 number, since 2×1219749072² = 2975575597289722368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219749079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118413 + ... + 128300.

Almost surely, 2^1219749072 is an apocalyptic number.

1219749072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1219749072 is an abundant number, since it is smaller than the sum of its proper divisors (1961874672).

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

1219749072 is a wasteful number, since it uses less digits than its factorization.

1219749072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246827 (or 246821 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 1219749072 is about 34924.9061845555. The cubic root of 1219749072 is about 1068.4564671946.

The spelling of 1219749072 in words is "one billion, two hundred nineteen million, seven hundred forty-nine thousand, seventy-two".